Merge pull request #2800 from MediaBrowser/dev

Dev

73 files changed, 206 insertions, 234 deletions

diff --git a/MediaBrowser.Providers/Books/AudioBookMetadataService.cs b/MediaBrowser.Providers/Books/AudioBookMetadataService.cs
index 7cce851053..b9e265d22e 100644
--- a/MediaBrowser.Providers/Books/AudioBookMetadataService.cs
+++ b/MediaBrowser.Providers/Books/AudioBookMetadataService.cs
@@ -16,7 +16,7 @@ namespace MediaBrowser.Providers.Books
 {
     public class AudioBookMetadataService : MetadataService<AudioBook, SongInfo>
     {
-        protected override void MergeData(MetadataResult<AudioBook> source, MetadataResult<AudioBook> target, List<MetadataFields> lockedFields, bool replaceData, bool mergeMetadataSettings)
+        protected override void MergeData(MetadataResult<AudioBook> source, MetadataResult<AudioBook> target, MetadataFields[] lockedFields, bool replaceData, bool mergeMetadataSettings)
         {
             ProviderUtils.MergeBaseItemData(source, target, lockedFields, replaceData, mergeMetadataSettings);
 
diff --git a/MediaBrowser.Providers/Books/AudioPodcastMetadataService.cs b/MediaBrowser.Providers/Books/AudioPodcastMetadataService.cs
index 219f957997..2ea0a7ee96 100644
--- a/MediaBrowser.Providers/Books/AudioPodcastMetadataService.cs
+++ b/MediaBrowser.Providers/Books/AudioPodcastMetadataService.cs
@@ -16,7 +16,7 @@ namespace MediaBrowser.Providers.Books
 {
     public class AudioPodcastMetadataService : MetadataService<AudioPodcast, SongInfo>
     {
-        protected override void MergeData(MetadataResult<AudioPodcast> source, MetadataResult<AudioPodcast> target, List<MetadataFields> lockedFields, bool replaceData, bool mergeMetadataSettings)
+        protected override void MergeData(MetadataResult<AudioPodcast> source, MetadataResult<AudioPodcast> target, MetadataFields[] lockedFields, bool replaceData, bool mergeMetadataSettings)
         {
             ProviderUtils.MergeBaseItemData(source, target, lockedFields, replaceData, mergeMetadataSettings);
 
diff --git a/MediaBrowser.Providers/Books/BookMetadataService.cs b/MediaBrowser.Providers/Books/BookMetadataService.cs
index ae7e734ccb..68b96486af 100644
--- a/MediaBrowser.Providers/Books/BookMetadataService.cs
+++ b/MediaBrowser.Providers/Books/BookMetadataService.cs
@@ -14,7 +14,7 @@ namespace MediaBrowser.Providers.Books
 {
     public class BookMetadataService : MetadataService<Book, BookInfo>
     {
-        protected override void MergeData(MetadataResult<Book> source, MetadataResult<Book> target, List<MetadataFields> lockedFields, bool replaceData, bool mergeMetadataSettings)
+        protected override void MergeData(MetadataResult<Book> source, MetadataResult<Book> target, MetadataFields[] lockedFields, bool replaceData, bool mergeMetadataSettings)
         {
             ProviderUtils.MergeBaseItemData(source, target, lockedFields, replaceData, mergeMetadataSettings);
 
diff --git a/MediaBrowser.Providers/BoxSets/BoxSetMetadataService.cs b/MediaBrowser.Providers/BoxSets/BoxSetMetadataService.cs
index b391ce4d3c..a8400848d7 100644
--- a/MediaBrowser.Providers/BoxSets/BoxSetMetadataService.cs
+++ b/MediaBrowser.Providers/BoxSets/BoxSetMetadataService.cs
@@ -35,7 +35,7 @@ namespace MediaBrowser.Providers.BoxSets
             return updateType;
         }
 
-        protected override void MergeData(MetadataResult<BoxSet> source, MetadataResult<BoxSet> target, List<MetadataFields> lockedFields, bool replaceData, bool mergeMetadataSettings)
+        protected override void MergeData(MetadataResult<BoxSet> source, MetadataResult<BoxSet> target, MetadataFields[] lockedFields, bool replaceData, bool mergeMetadataSettings)
         {
             ProviderUtils.MergeBaseItemData(source, target, lockedFields, replaceData, mergeMetadataSettings);
 
diff --git a/MediaBrowser.Providers/BoxSets/MovieDbBoxSetImageProvider.cs b/MediaBrowser.Providers/BoxSets/MovieDbBoxSetImageProvider.cs
index 852feab37c..7d1f2779b7 100644
--- a/MediaBrowser.Providers/BoxSets/MovieDbBoxSetImageProvider.cs
+++ b/MediaBrowser.Providers/BoxSets/MovieDbBoxSetImageProvider.cs
@@ -33,12 +33,12 @@ namespace MediaBrowser.Providers.BoxSets
             get { return "TheMovieDb"; }
         }
 
-        public bool Supports(IHasImages item)
+        public bool Supports(IHasMetadata item)
         {
             return item is BoxSet;
         }
 
-        public IEnumerable<ImageType> GetSupportedImages(IHasImages item)
+        public IEnumerable<ImageType> GetSupportedImages(IHasMetadata item)
         {
             return new List<ImageType>
             {
@@ -47,7 +47,7 @@ namespace MediaBrowser.Providers.BoxSets
             };
         }
 
-        public async Task<IEnumerable<RemoteImageInfo>> GetImages(IHasImages item, CancellationToken cancellationToken)
+        public async Task<IEnumerable<RemoteImageInfo>> GetImages(IHasMetadata item, CancellationToken cancellationToken)
         {
             var tmdbId = item.GetProviderId(MetadataProviders.Tmdb);
 
@@ -123,8 +123,7 @@ namespace MediaBrowser.Providers.BoxSets
                 return 0;
             })
                 .ThenByDescending(i => i.CommunityRating ?? 0)
-                .ThenByDescending(i => i.VoteCount ?? 0)
-                .ToList();
+                .ThenByDescending(i => i.VoteCount ?? 0);
         }
 
         /// <summary>
@@ -145,8 +144,7 @@ namespace MediaBrowser.Providers.BoxSets
         private IEnumerable<MovieDbBoxSetProvider.Backdrop> GetBackdrops(MovieDbBoxSetProvider.Images images)
         {
             var eligibleBackdrops = images.backdrops == null ? new List<MovieDbBoxSetProvider.Backdrop>() :
-                images.backdrops
-                .ToList();
+                images.backdrops;
 
             return eligibleBackdrops.OrderByDescending(i => i.vote_average)
                 .ThenByDescending(i => i.vote_count);
diff --git a/MediaBrowser.Providers/Channels/ChannelMetadataService.cs b/MediaBrowser.Providers/Channels/ChannelMetadataService.cs
index 8a3da5bf4a..b22db559eb 100644
--- a/MediaBrowser.Providers/Channels/ChannelMetadataService.cs
+++ b/MediaBrowser.Providers/Channels/ChannelMetadataService.cs
@@ -14,7 +14,7 @@ namespace MediaBrowser.Providers.Channels
 {
     public class ChannelMetadataService : MetadataService<Channel, ItemLookupInfo>
     {
-        protected override void MergeData(MetadataResult<Channel> source, MetadataResult<Channel> target, List<MetadataFields> lockedFields, bool replaceData, bool mergeMetadataSettings)
+        protected override void MergeData(MetadataResult<Channel> source, MetadataResult<Channel> target, MetadataFields[] lockedFields, bool replaceData, bool mergeMetadataSettings)
         {
             ProviderUtils.MergeBaseItemData(source, target, lockedFields, replaceData, mergeMetadataSettings);
         }
diff --git a/MediaBrowser.Providers/Folders/CollectionFolderMetadataService.cs b/MediaBrowser.Providers/Folders/CollectionFolderMetadataService.cs
index dc0fda72ef..1dab086715 100644
--- a/MediaBrowser.Providers/Folders/CollectionFolderMetadataService.cs
+++ b/MediaBrowser.Providers/Folders/CollectionFolderMetadataService.cs
@@ -15,7 +15,7 @@ namespace MediaBrowser.Providers.Folders
 {
     public class CollectionFolderMetadataService : MetadataService<CollectionFolder, ItemLookupInfo>
     {
-        protected override void MergeData(MetadataResult<CollectionFolder> source, MetadataResult<CollectionFolder> target, List<MetadataFields> lockedFields, bool replaceData, bool mergeMetadataSettings)
+        protected override void MergeData(MetadataResult<CollectionFolder> source, MetadataResult<CollectionFolder> target, MetadataFields[] lockedFields, bool replaceData, bool mergeMetadataSettings)
         {
             ProviderUtils.MergeBaseItemData(source, target, lockedFields, replaceData, mergeMetadataSettings);
         }
@@ -27,7 +27,7 @@ namespace MediaBrowser.Providers.Folders
 
     public class ManualCollectionsFolderMetadataService : MetadataService<ManualCollectionsFolder, ItemLookupInfo>
     {
-        protected override void MergeData(MetadataResult<ManualCollectionsFolder> source, MetadataResult<ManualCollectionsFolder> target, List<MetadataFields> lockedFields, bool replaceData, bool mergeMetadataSettings)
+        protected override void MergeData(MetadataResult<ManualCollectionsFolder> source, MetadataResult<ManualCollectionsFolder> target, MetadataFields[] lockedFields, bool replaceData, bool mergeMetadataSettings)
         {
             ProviderUtils.MergeBaseItemData(source, target, lockedFields, replaceData, mergeMetadataSettings);
         }
diff --git a/MediaBrowser.Providers/Folders/FolderMetadataService.cs b/MediaBrowser.Providers/Folders/FolderMetadataService.cs
index ff8d87e2bc..687dac919f 100644
--- a/MediaBrowser.Providers/Folders/FolderMetadataService.cs
+++ b/MediaBrowser.Providers/Folders/FolderMetadataService.cs
@@ -23,7 +23,7 @@ namespace MediaBrowser.Providers.Folders
             }
         }
 
-        protected override void MergeData(MetadataResult<Folder> source, MetadataResult<Folder> target, List<MetadataFields> lockedFields, bool replaceData, bool mergeMetadataSettings)
+        protected override void MergeData(MetadataResult<Folder> source, MetadataResult<Folder> target, MetadataFields[] lockedFields, bool replaceData, bool mergeMetadataSettings)
         {
             ProviderUtils.MergeBaseItemData(source, target, lockedFields, replaceData, mergeMetadataSettings);
         }
diff --git a/MediaBrowser.Providers/Folders/UserViewMetadataService.cs b/MediaBrowser.Providers/Folders/UserViewMetadataService.cs
index 06b62a98be..951794961e 100644
--- a/MediaBrowser.Providers/Folders/UserViewMetadataService.cs
+++ b/MediaBrowser.Providers/Folders/UserViewMetadataService.cs
@@ -14,7 +14,7 @@ namespace MediaBrowser.Providers.Folders
 {
     public class UserViewMetadataService : MetadataService<UserView, ItemLookupInfo>
     {
-        protected override void MergeData(MetadataResult<UserView> source, MetadataResult<UserView> target, List<MetadataFields> lockedFields, bool replaceData, bool mergeMetadataSettings)
+        protected override void MergeData(MetadataResult<UserView> source, MetadataResult<UserView> target, MetadataFields[] lockedFields, bool replaceData, bool mergeMetadataSettings)
         {
             ProviderUtils.MergeBaseItemData(source, target, lockedFields, replaceData, mergeMetadataSettings);
         }
diff --git a/MediaBrowser.Providers/GameGenres/GameGenreMetadataService.cs b/MediaBrowser.Providers/GameGenres/GameGenreMetadataService.cs
index 13d40b4d90..edde0f5e3f 100644
--- a/MediaBrowser.Providers/GameGenres/GameGenreMetadataService.cs
+++ b/MediaBrowser.Providers/GameGenres/GameGenreMetadataService.cs
@@ -14,7 +14,7 @@ namespace MediaBrowser.Providers.GameGenres
 {
     public class GameGenreMetadataService : MetadataService<GameGenre, ItemLookupInfo>
     {
-        protected override void MergeData(MetadataResult<GameGenre> source, MetadataResult<GameGenre> target, List<MetadataFields> lockedFields, bool replaceData, bool mergeMetadataSettings)
+        protected override void MergeData(MetadataResult<GameGenre> source, MetadataResult<GameGenre> target, MetadataFields[] lockedFields, bool replaceData, bool mergeMetadataSettings)
         {
             ProviderUtils.MergeBaseItemData(source, target, lockedFields, replaceData, mergeMetadataSettings);
         }
diff --git a/MediaBrowser.Providers/Games/GameMetadataService.cs b/MediaBrowser.Providers/Games/GameMetadataService.cs
index 10f74629fb..67becbf585 100644
--- a/MediaBrowser.Providers/Games/GameMetadataService.cs
+++ b/MediaBrowser.Providers/Games/GameMetadataService.cs
@@ -14,7 +14,7 @@ namespace MediaBrowser.Providers.Games
 {
     public class GameMetadataService : MetadataService<Game, GameInfo>
     {
-        protected override void MergeData(MetadataResult<Game> source, MetadataResult<Game> target, List<MetadataFields> lockedFields, bool replaceData, bool mergeMetadataSettings)
+        protected override void MergeData(MetadataResult<Game> source, MetadataResult<Game> target, MetadataFields[] lockedFields, bool replaceData, bool mergeMetadataSettings)
         {
             ProviderUtils.MergeBaseItemData(source, target, lockedFields, replaceData, mergeMetadataSettings);
 
diff --git a/MediaBrowser.Providers/Games/GameSystemMetadataService.cs b/MediaBrowser.Providers/Games/GameSystemMetadataService.cs
index ca33563fad..474dd2fcf4 100644
--- a/MediaBrowser.Providers/Games/GameSystemMetadataService.cs
+++ b/MediaBrowser.Providers/Games/GameSystemMetadataService.cs
@@ -14,7 +14,7 @@ namespace MediaBrowser.Providers.Games
 {
     public class GameSystemMetadataService : MetadataService<GameSystem, GameSystemInfo>
     {
-        protected override void MergeData(MetadataResult<GameSystem> source, MetadataResult<GameSystem> target, List<MetadataFields> lockedFields, bool replaceData, bool mergeMetadataSettings)
+        protected override void MergeData(MetadataResult<GameSystem> source, MetadataResult<GameSystem> target, MetadataFields[] lockedFields, bool replaceData, bool mergeMetadataSettings)
         {
             ProviderUtils.MergeBaseItemData(source, target, lockedFields, replaceData, mergeMetadataSettings);
 
diff --git a/MediaBrowser.Providers/Genres/GenreMetadataService.cs b/MediaBrowser.Providers/Genres/GenreMetadataService.cs
index a695fb3725..88fba18547 100644
--- a/MediaBrowser.Providers/Genres/GenreMetadataService.cs
+++ b/MediaBrowser.Providers/Genres/GenreMetadataService.cs
@@ -14,7 +14,7 @@ namespace MediaBrowser.Providers.Genres
 {
     public class GenreMetadataService : MetadataService<Genre, ItemLookupInfo>
     {
-        protected override void MergeData(MetadataResult<Genre> source, MetadataResult<Genre> target, List<MetadataFields> lockedFields, bool replaceData, bool mergeMetadataSettings)
+        protected override void MergeData(MetadataResult<Genre> source, MetadataResult<Genre> target, MetadataFields[] lockedFields, bool replaceData, bool mergeMetadataSettings)
         {
             ProviderUtils.MergeBaseItemData(source, target, lockedFields, replaceData, mergeMetadataSettings);
         }
diff --git a/MediaBrowser.Providers/ImagesByName/ImageUtils.cs b/MediaBrowser.Providers/ImagesByName/ImageUtils.cs
index 499fd2e0b3..74c01fb5c6 100644
--- a/MediaBrowser.Providers/ImagesByName/ImageUtils.cs
+++ b/MediaBrowser.Providers/ImagesByName/ImageUtils.cs
@@ -53,7 +53,7 @@ namespace MediaBrowser.Providers.ImagesByName
             return file;
         }
 
-        public static string FindMatch(IHasImages item, IEnumerable<string> images)
+        public static string FindMatch(IHasMetadata item, IEnumerable<string> images)
         {
             var name = GetComparableName(item.Name);
 
diff --git a/MediaBrowser.Providers/LiveTv/AudioRecordingService.cs b/MediaBrowser.Providers/LiveTv/AudioRecordingService.cs
index f4749c37d5..509c911889 100644
--- a/MediaBrowser.Providers/LiveTv/AudioRecordingService.cs
+++ b/MediaBrowser.Providers/LiveTv/AudioRecordingService.cs
@@ -14,7 +14,7 @@ namespace MediaBrowser.Providers.LiveTv
 {
     public class AudioRecordingService : MetadataService<LiveTvAudioRecording, ItemLookupInfo>
     {
-        protected override void MergeData(MetadataResult<LiveTvAudioRecording> source, MetadataResult<LiveTvAudioRecording> target, List<MetadataFields> lockedFields, bool replaceData, bool mergeMetadataSettings)
+        protected override void MergeData(MetadataResult<LiveTvAudioRecording> source, MetadataResult<LiveTvAudioRecording> target, MetadataFields[] lockedFields, bool replaceData, bool mergeMetadataSettings)
         {
             ProviderUtils.MergeBaseItemData(source, target, lockedFields, replaceData, mergeMetadataSettings);
         }
diff --git a/MediaBrowser.Providers/LiveTv/ChannelMetadataService.cs b/MediaBrowser.Providers/LiveTv/ChannelMetadataService.cs
index 8012021abc..31e3ecaf4e 100644
--- a/MediaBrowser.Providers/LiveTv/ChannelMetadataService.cs
+++ b/MediaBrowser.Providers/LiveTv/ChannelMetadataService.cs
@@ -14,7 +14,7 @@ namespace MediaBrowser.Providers.LiveTv
 {
     public class ChannelMetadataService : MetadataService<LiveTvChannel, ItemLookupInfo>
     {
-        protected override void MergeData(MetadataResult<LiveTvChannel> source, MetadataResult<LiveTvChannel> target, List<MetadataFields> lockedFields, bool replaceData, bool mergeMetadataSettings)
+        protected override void MergeData(MetadataResult<LiveTvChannel> source, MetadataResult<LiveTvChannel> target, MetadataFields[] lockedFields, bool replaceData, bool mergeMetadataSettings)
         {
             ProviderUtils.MergeBaseItemData(source, target, lockedFields, replaceData, mergeMetadataSettings);
         }
diff --git a/MediaBrowser.Providers/LiveTv/ProgramMetadataService.cs b/MediaBrowser.Providers/LiveTv/ProgramMetadataService.cs
index f203aa8c6a..28a12540bb 100644
--- a/MediaBrowser.Providers/LiveTv/ProgramMetadataService.cs
+++ b/MediaBrowser.Providers/LiveTv/ProgramMetadataService.cs
@@ -14,7 +14,7 @@ namespace MediaBrowser.Providers.LiveTv
 {
     public class ProgramMetadataService : MetadataService<LiveTvProgram, LiveTvProgramLookupInfo>
     {
-        protected override void MergeData(MetadataResult<LiveTvProgram> source, MetadataResult<LiveTvProgram> target, List<MetadataFields> lockedFields, bool replaceData, bool mergeMetadataSettings)
+        protected override void MergeData(MetadataResult<LiveTvProgram> source, MetadataResult<LiveTvProgram> target, MetadataFields[] lockedFields, bool replaceData, bool mergeMetadataSettings)
         {
             ProviderUtils.MergeBaseItemData(source, target, lockedFields, replaceData, mergeMetadataSettings);
         }
diff --git a/MediaBrowser.Providers/LiveTv/VideoRecordingService.cs b/MediaBrowser.Providers/LiveTv/VideoRecordingService.cs
index 528e9a5ec9..8bfa916558 100644
--- a/MediaBrowser.Providers/LiveTv/VideoRecordingService.cs
+++ b/MediaBrowser.Providers/LiveTv/VideoRecordingService.cs
@@ -14,7 +14,7 @@ namespace MediaBrowser.Providers.LiveTv
 {
     public class VideoRecordingService : MetadataService<LiveTvVideoRecording, ItemLookupInfo>
     {
-        protected override void MergeData(MetadataResult<LiveTvVideoRecording> source, MetadataResult<LiveTvVideoRecording> target, List<MetadataFields> lockedFields, bool replaceData, bool mergeMetadataSettings)
+        protected override void MergeData(MetadataResult<LiveTvVideoRecording> source, MetadataResult<LiveTvVideoRecording> target, MetadataFields[] lockedFields, bool replaceData, bool mergeMetadataSettings)
         {
             ProviderUtils.MergeBaseItemData(source, target, lockedFields, replaceData, mergeMetadataSettings);
         }
diff --git a/MediaBrowser.Providers/Manager/ImageSaver.cs b/MediaBrowser.Providers/Manager/ImageSaver.cs
index 2bf2d0ac75..7fdbdbcc7a 100644
--- a/MediaBrowser.Providers/Manager/ImageSaver.cs
+++ b/MediaBrowser.Providers/Manager/ImageSaver.cs
@@ -17,6 +17,7 @@ using System.Linq;
 using System.Threading;
 using System.Threading.Tasks;
 using MediaBrowser.Model.IO;
+using MediaBrowser.Model.Extensions;
 
 namespace MediaBrowser.Providers.Manager
 {
@@ -67,12 +68,12 @@ namespace MediaBrowser.Providers.Manager
         /// <param name="cancellationToken">The cancellation token.</param>
         /// <returns>Task.</returns>
         /// <exception cref="System.ArgumentNullException">mimeType</exception>
-        public Task SaveImage(IHasImages item, Stream source, string mimeType, ImageType type, int? imageIndex, CancellationToken cancellationToken)
+        public Task SaveImage(IHasMetadata item, Stream source, string mimeType, ImageType type, int? imageIndex, CancellationToken cancellationToken)
         {
             return SaveImage(item, source, mimeType, type, imageIndex, null, cancellationToken);
         }
 
-        public async Task SaveImage(IHasImages item, Stream source, string mimeType, ImageType type, int? imageIndex, bool? saveLocallyWithMedia, CancellationToken cancellationToken)
+        public async Task SaveImage(IHasMetadata item, Stream source, string mimeType, ImageType type, int? imageIndex, bool? saveLocallyWithMedia, CancellationToken cancellationToken)
         {
             if (string.IsNullOrEmpty(mimeType))
             {
@@ -274,7 +275,7 @@ namespace MediaBrowser.Providers.Manager
         /// <param name="mimeType">Type of the MIME.</param>
         /// <param name="saveLocally">if set to <c>true</c> [save locally].</param>
         /// <returns>IEnumerable{System.String}.</returns>
-        private string[] GetSavePaths(IHasImages item, ImageType type, int? imageIndex, string mimeType, bool saveLocally)
+        private string[] GetSavePaths(IHasMetadata item, ImageType type, int? imageIndex, string mimeType, bool saveLocally)
         {
             if (!saveLocally || (_config.Configuration.ImageSavingConvention == ImageSavingConvention.Legacy))
             {
@@ -296,7 +297,7 @@ namespace MediaBrowser.Providers.Manager
         /// or
         /// imageIndex
         /// </exception>
-        private ItemImageInfo GetCurrentImage(IHasImages item, ImageType type, int imageIndex)
+        private ItemImageInfo GetCurrentImage(IHasMetadata item, ImageType type, int imageIndex)
         {
             return item.GetImageInfo(type, imageIndex);
         }
@@ -311,7 +312,7 @@ namespace MediaBrowser.Providers.Manager
         /// <exception cref="System.ArgumentNullException">imageIndex
         /// or
         /// imageIndex</exception>
-        private void SetImagePath(IHasImages item, ImageType type, int? imageIndex, string path)
+        private void SetImagePath(IHasMetadata item, ImageType type, int? imageIndex, string path)
         {
             item.SetImagePath(type, imageIndex ?? 0, _fileSystem.GetFileInfo(path));
         }
@@ -330,7 +331,7 @@ namespace MediaBrowser.Providers.Manager
         /// or
         /// imageIndex
         /// </exception>
-        private string GetStandardSavePath(IHasImages item, ImageType type, int? imageIndex, string mimeType, bool saveLocally)
+        private string GetStandardSavePath(IHasMetadata item, ImageType type, int? imageIndex, string mimeType, bool saveLocally)
         {
             var season = item as Season;
             var extension = MimeTypes.ToExtension(mimeType);
@@ -483,7 +484,7 @@ namespace MediaBrowser.Providers.Manager
         /// <param name="mimeType">Type of the MIME.</param>
         /// <returns>IEnumerable{System.String}.</returns>
         /// <exception cref="System.ArgumentNullException">imageIndex</exception>
-        private string[] GetCompatibleSavePaths(IHasImages item, ImageType type, int? imageIndex, string mimeType)
+        private string[] GetCompatibleSavePaths(IHasMetadata item, ImageType type, int? imageIndex, string mimeType)
         {
             var season = item as Season;
 
@@ -541,7 +542,7 @@ namespace MediaBrowser.Providers.Manager
                 {
                     list.Add(Path.Combine(item.ContainingFolderPath, "extrathumbs", "thumb" + outputIndex.ToString(UsCulture) + extension));
                 }
-                return list.ToArray();
+                return list.ToArray(list.Count);
             }
 
             if (type == ImageType.Primary)
@@ -603,7 +604,7 @@ namespace MediaBrowser.Providers.Manager
         /// <param name="imageFilename">The image filename.</param>
         /// <param name="extension">The extension.</param>
         /// <returns>System.String.</returns>
-        private string GetSavePathForItemInMixedFolder(IHasImages item, ImageType type, string imageFilename, string extension)
+        private string GetSavePathForItemInMixedFolder(IHasMetadata item, ImageType type, string imageFilename, string extension)
         {
             if (type == ImageType.Primary)
             {
diff --git a/MediaBrowser.Providers/Manager/ItemImageProvider.cs b/MediaBrowser.Providers/Manager/ItemImageProvider.cs
index 39715a4497..4864f455af 100644
--- a/MediaBrowser.Providers/Manager/ItemImageProvider.cs
+++ b/MediaBrowser.Providers/Manager/ItemImageProvider.cs
@@ -23,6 +23,7 @@ using MediaBrowser.Controller.Entities.TV;
 using MediaBrowser.Controller.IO;
 using MediaBrowser.Controller.LiveTv;
 using MediaBrowser.Model.MediaInfo;
+using MediaBrowser.Model.Extensions;
 
 namespace MediaBrowser.Providers.Manager
 {
@@ -41,7 +42,7 @@ namespace MediaBrowser.Providers.Manager
             _fileSystem = fileSystem;
         }
 
-        public bool ValidateImages(IHasImages item, IEnumerable<IImageProvider> providers, IDirectoryService directoryService)
+        public bool ValidateImages(IHasMetadata item, IEnumerable<IImageProvider> providers, IDirectoryService directoryService)
         {
             var hasChanges = false;
 
@@ -60,7 +61,7 @@ namespace MediaBrowser.Providers.Manager
             return hasChanges;
         }
 
-        public async Task<RefreshResult> RefreshImages(IHasImages item, LibraryOptions libraryOptions, IEnumerable<IImageProvider> imageProviders, ImageRefreshOptions refreshOptions, MetadataOptions savedOptions, CancellationToken cancellationToken)
+        public async Task<RefreshResult> RefreshImages(IHasMetadata item, LibraryOptions libraryOptions, List<IImageProvider> providers, ImageRefreshOptions refreshOptions, MetadataOptions savedOptions, CancellationToken cancellationToken)
         {
             if (refreshOptions.IsReplacingImage(ImageType.Backdrop))
             {
@@ -73,8 +74,6 @@ namespace MediaBrowser.Providers.Manager
 
             var result = new RefreshResult { UpdateType = ItemUpdateType.None };
 
-            var providers = imageProviders.ToList();
-
             var providerIds = new List<Guid>();
 
             // In order to avoid duplicates, only download these if there are none already
@@ -118,7 +117,7 @@ namespace MediaBrowser.Providers.Manager
         /// <param name="result">The result.</param>
         /// <param name="cancellationToken">The cancellation token.</param>
         /// <returns>Task.</returns>
-        private async Task RefreshFromProvider(IHasImages item,
+        private async Task RefreshFromProvider(IHasMetadata item,
             IDynamicImageProvider provider,
             ImageRefreshOptions refreshOptions,
             MetadataOptions savedOptions,
@@ -203,7 +202,7 @@ namespace MediaBrowser.Providers.Manager
             ImageType.Thumb
         };
 
-        private bool HasImage(IHasImages item, ImageType type)
+        private bool HasImage(IHasMetadata item, ImageType type)
         {
             var image = item.GetImageInfo(type, 0);
 
@@ -220,7 +219,7 @@ namespace MediaBrowser.Providers.Manager
         /// <param name="backdropLimit">The backdrop limit.</param>
         /// <param name="screenshotLimit">The screenshot limit.</param>
         /// <returns><c>true</c> if the specified item contains images; otherwise, <c>false</c>.</returns>
-        private bool ContainsImages(IHasImages item, List<ImageType> images, MetadataOptions savedOptions, int backdropLimit, int screenshotLimit)
+        private bool ContainsImages(IHasMetadata item, List<ImageType> images, MetadataOptions savedOptions, int backdropLimit, int screenshotLimit)
         {
             if (_singularImages.Any(i => images.Contains(i) && !HasImage(item, i) && savedOptions.GetLimit(i) > 0))
             {
@@ -253,7 +252,7 @@ namespace MediaBrowser.Providers.Manager
         /// <param name="result">The result.</param>
         /// <param name="cancellationToken">The cancellation token.</param>
         /// <returns>Task.</returns>
-        private async Task RefreshFromProvider(IHasImages item, LibraryOptions libraryOptions,
+        private async Task RefreshFromProvider(IHasMetadata item, LibraryOptions libraryOptions,
             IRemoteImageProvider provider,
             ImageRefreshOptions refreshOptions,
             MetadataOptions savedOptions,
@@ -333,7 +332,7 @@ namespace MediaBrowser.Providers.Manager
             }
         }
 
-        private bool IsEnabled(MetadataOptions options, ImageType type, IHasImages item)
+        private bool IsEnabled(MetadataOptions options, ImageType type, IHasMetadata item)
         {
             if (type == ImageType.Backdrop)
             {
@@ -360,7 +359,7 @@ namespace MediaBrowser.Providers.Manager
             return options.IsEnabled(type);
         }
 
-        private void ClearImages(IHasImages item, ImageType type)
+        private void ClearImages(IHasMetadata item, ImageType type)
         {
             var deleted = false;
             var deletedImages = new List<ItemImageInfo>();
@@ -384,10 +383,7 @@ namespace MediaBrowser.Providers.Manager
                 }
             }
 
-            foreach (var image in deletedImages)
-            {
-                item.RemoveImage(image);
-            }
+            item.RemoveImages(deletedImages);
 
             if (deleted)
             {
@@ -395,7 +391,7 @@ namespace MediaBrowser.Providers.Manager
             }
         }
 
-        public bool MergeImages(IHasImages item, List<LocalImageInfo> images)
+        public bool MergeImages(IHasMetadata item, List<LocalImageInfo> images)
         {
             var changed = false;
 
@@ -453,7 +449,7 @@ namespace MediaBrowser.Providers.Manager
             return changed;
         }
 
-        private bool UpdateMultiImages(IHasImages item, List<LocalImageInfo> images, ImageType type)
+        private bool UpdateMultiImages(IHasMetadata item, List<LocalImageInfo> images, ImageType type)
         {
             var changed = false;
 
@@ -461,7 +457,7 @@ namespace MediaBrowser.Providers.Manager
 
             var newImageFileInfos = newImages
                     .Select(i => i.FileInfo)
-                    .ToList();
+                    .ToList(newImages.Count);
 
             if (item.AddImages(type, newImageFileInfos))
             {
@@ -471,7 +467,7 @@ namespace MediaBrowser.Providers.Manager
             return changed;
         }
 
-        private async Task<bool> DownloadImage(IHasImages item, LibraryOptions libraryOptions,
+        private async Task<bool> DownloadImage(IHasMetadata item, LibraryOptions libraryOptions,
             IRemoteImageProvider provider,
             RefreshResult result,
             IEnumerable<RemoteImageInfo> images,
@@ -517,7 +513,7 @@ namespace MediaBrowser.Providers.Manager
             return false;
         }
 
-        private bool EnableImageStub(IHasImages item, ImageType type, LibraryOptions libraryOptions)
+        private bool EnableImageStub(IHasMetadata item, ImageType type, LibraryOptions libraryOptions)
         {
             if (item is LiveTvProgram)
             {
@@ -557,14 +553,14 @@ namespace MediaBrowser.Providers.Manager
             }
         }
 
-        private void SaveImageStub(IHasImages item, ImageType imageType, IEnumerable<string> urls)
+        private void SaveImageStub(IHasMetadata item, ImageType imageType, IEnumerable<string> urls)
         {
             var newIndex = item.AllowsMultipleImages(imageType) ? item.GetImages(imageType).Count() : 0;
 
             SaveImageStub(item, imageType, urls, newIndex);
         }
 
-        private void SaveImageStub(IHasImages item, ImageType imageType, IEnumerable<string> urls, int newIndex)
+        private void SaveImageStub(IHasMetadata item, ImageType imageType, IEnumerable<string> urls, int newIndex)
         {
             var path = string.Join("|", urls.Take(1).ToArray());
 
@@ -576,7 +572,7 @@ namespace MediaBrowser.Providers.Manager
             }, newIndex);
         }
 
-        private async Task DownloadBackdrops(IHasImages item, LibraryOptions libraryOptions, ImageType imageType, int limit, IRemoteImageProvider provider, RefreshResult result, IEnumerable<RemoteImageInfo> images, int minWidth, CancellationToken cancellationToken)
+        private async Task DownloadBackdrops(IHasMetadata item, LibraryOptions libraryOptions, ImageType imageType, int limit, IRemoteImageProvider provider, RefreshResult result, IEnumerable<RemoteImageInfo> images, int minWidth, CancellationToken cancellationToken)
         {
             foreach (var image in images.Where(i => i.Type == imageType))
             {
diff --git a/MediaBrowser.Providers/Manager/MetadataService.cs b/MediaBrowser.Providers/Manager/MetadataService.cs
index 01aee9b92e..5d531c95c6 100644
--- a/MediaBrowser.Providers/Manager/MetadataService.cs
+++ b/MediaBrowser.Providers/Manager/MetadataService.cs
@@ -201,7 +201,7 @@ namespace MediaBrowser.Providers.Manager
             {
                 var baseItem = result.Item as BaseItem;
 
-                await LibraryManager.UpdatePeople(baseItem, result.People.ToList());
+                await LibraryManager.UpdatePeople(baseItem, result.People);
                 await SavePeopleMetadata(result.People, libraryOptions, cancellationToken).ConfigureAwait(false);
             }
             await result.Item.UpdateToRepository(reason, cancellationToken).ConfigureAwait(false);
@@ -314,7 +314,7 @@ namespace MediaBrowser.Providers.Manager
                 var folder = item as Folder;
                 if (folder != null && folder.SupportsCumulativeRunTimeTicks)
                 {
-                    var items = folder.GetRecursiveChildren(i => !i.IsFolder).ToList();
+                    var items = folder.GetRecursiveChildren(i => !i.IsFolder);
                     var ticks = items.Select(i => i.RunTimeTicks ?? 0).Sum();
 
                     if (!folder.RunTimeTicks.HasValue || folder.RunTimeTicks.Value != ticks)
@@ -519,7 +519,7 @@ namespace MediaBrowser.Providers.Manager
                             userDataList.AddRange(localItem.UserDataList);
                         }
 
-                        MergeData(localItem, temp, new List<MetadataFields>(), !options.ReplaceAllMetadata, true);
+                        MergeData(localItem, temp, new MetadataFields[]{}, !options.ReplaceAllMetadata, true);
                         refreshResult.UpdateType = refreshResult.UpdateType | ItemUpdateType.MetadataImport;
 
                         // Only one local provider allowed per item
@@ -567,7 +567,7 @@ namespace MediaBrowser.Providers.Manager
                     else
                     {
                         // TODO: If the new metadata from above has some blank data, this can cause old data to get filled into those empty fields
-                        MergeData(metadata, temp, new List<MetadataFields>(), false, false);
+                        MergeData(metadata, temp, new MetadataFields[]{}, false, false);
                         MergeData(temp, metadata, item.LockedFields, true, false);
                     }
                 }
@@ -704,7 +704,7 @@ namespace MediaBrowser.Providers.Manager
 
             foreach (var result in results)
             {
-                MergeData(result, temp, new List<MetadataFields>(), false, false);
+                MergeData(result, temp, new MetadataFields[]{}, false, false);
             }
 
             return refreshResult;
@@ -736,7 +736,7 @@ namespace MediaBrowser.Providers.Manager
 
         protected abstract void MergeData(MetadataResult<TItemType> source,
             MetadataResult<TItemType> target,
-            List<MetadataFields> lockedFields,
+            MetadataFields[] lockedFields,
             bool replaceData,
             bool mergeMetadataSettings);
 
diff --git a/MediaBrowser.Providers/Manager/ProviderManager.cs b/MediaBrowser.Providers/Manager/ProviderManager.cs
index ce995fe647..139bd6d588 100644
--- a/MediaBrowser.Providers/Manager/ProviderManager.cs
+++ b/MediaBrowser.Providers/Manager/ProviderManager.cs
@@ -128,7 +128,7 @@ namespace MediaBrowser.Providers.Manager
             return Task.FromResult(ItemUpdateType.None);
         }
 
-        public async Task SaveImage(IHasImages item, string url, ImageType type, int? imageIndex, CancellationToken cancellationToken)
+        public async Task SaveImage(IHasMetadata item, string url, ImageType type, int? imageIndex, CancellationToken cancellationToken)
         {
             var response = await _httpClient.GetResponse(new HttpRequestOptions
             {
@@ -142,12 +142,12 @@ namespace MediaBrowser.Providers.Manager
                     .ConfigureAwait(false);
         }
 
-        public Task SaveImage(IHasImages item, Stream source, string mimeType, ImageType type, int? imageIndex, CancellationToken cancellationToken)
+        public Task SaveImage(IHasMetadata item, Stream source, string mimeType, ImageType type, int? imageIndex, CancellationToken cancellationToken)
         {
             return new ImageSaver(ConfigurationManager, _libraryMonitor, _fileSystem, _logger, _memoryStreamProvider).SaveImage(item, source, mimeType, type, imageIndex, cancellationToken);
         }
 
-        public Task SaveImage(IHasImages item, string source, string mimeType, ImageType type, int? imageIndex, bool? saveLocallyWithMedia, CancellationToken cancellationToken)
+        public Task SaveImage(IHasMetadata item, string source, string mimeType, ImageType type, int? imageIndex, bool? saveLocallyWithMedia, CancellationToken cancellationToken)
         {
             if (string.IsNullOrWhiteSpace(source))
             {
@@ -159,7 +159,7 @@ namespace MediaBrowser.Providers.Manager
             return new ImageSaver(ConfigurationManager, _libraryMonitor, _fileSystem, _logger, _memoryStreamProvider).SaveImage(item, fileStream, mimeType, type, imageIndex, saveLocallyWithMedia, cancellationToken);
         }
 
-        public async Task<IEnumerable<RemoteImageInfo>> GetAvailableRemoteImages(IHasImages item, RemoteImageQuery query, CancellationToken cancellationToken)
+        public async Task<IEnumerable<RemoteImageInfo>> GetAvailableRemoteImages(IHasMetadata item, RemoteImageQuery query, CancellationToken cancellationToken)
         {
             var providers = GetRemoteImageProviders(item, query.IncludeDisabledProviders);
 
@@ -182,9 +182,7 @@ namespace MediaBrowser.Providers.Manager
 
             var results = await Task.WhenAll(tasks).ConfigureAwait(false);
 
-            var images = results.SelectMany(i => i.ToList());
-
-            return images;
+            return results.SelectMany(i => i.ToList());
         }
 
         /// <summary>
@@ -196,7 +194,7 @@ namespace MediaBrowser.Providers.Manager
         /// <param name="preferredLanguages">The preferred languages.</param>
         /// <param name="type">The type.</param>
         /// <returns>Task{IEnumerable{RemoteImageInfo}}.</returns>
-        private async Task<IEnumerable<RemoteImageInfo>> GetImages(IHasImages item, CancellationToken cancellationToken, IRemoteImageProvider provider, List<string> preferredLanguages, ImageType? type = null)
+        private async Task<IEnumerable<RemoteImageInfo>> GetImages(IHasMetadata item, CancellationToken cancellationToken, IRemoteImageProvider provider, List<string> preferredLanguages, ImageType? type = null)
         {
             try
             {
@@ -232,7 +230,7 @@ namespace MediaBrowser.Providers.Manager
         /// </summary>
         /// <param name="item">The item.</param>
         /// <returns>IEnumerable{IImageProvider}.</returns>
-        public IEnumerable<ImageProviderInfo> GetRemoteImageProviderInfo(IHasImages item)
+        public IEnumerable<ImageProviderInfo> GetRemoteImageProviderInfo(IHasMetadata item)
         {
             return GetRemoteImageProviders(item, true).Select(i => new ImageProviderInfo
             {
@@ -241,12 +239,12 @@ namespace MediaBrowser.Providers.Manager
             });
         }
 
-        public IEnumerable<IImageProvider> GetImageProviders(IHasImages item, ImageRefreshOptions refreshOptions)
+        public IEnumerable<IImageProvider> GetImageProviders(IHasMetadata item, ImageRefreshOptions refreshOptions)
         {
             return GetImageProviders(item, GetMetadataOptions(item), refreshOptions, false);
         }
 
-        private IEnumerable<IImageProvider> GetImageProviders(IHasImages item, MetadataOptions options, ImageRefreshOptions refreshOptions, bool includeDisabled)
+        private IEnumerable<IImageProvider> GetImageProviders(IHasMetadata item, MetadataOptions options, ImageRefreshOptions refreshOptions, bool includeDisabled)
         {
             // Avoid implicitly captured closure
             var currentOptions = options;
@@ -291,7 +289,7 @@ namespace MediaBrowser.Providers.Manager
                 .ThenBy(GetDefaultOrder);
         }
 
-        private IEnumerable<IRemoteImageProvider> GetRemoteImageProviders(IHasImages item, bool includeDisabled)
+        private IEnumerable<IRemoteImageProvider> GetRemoteImageProviders(IHasMetadata item, bool includeDisabled)
         {
             var options = GetMetadataOptions(item);
 
@@ -339,7 +337,7 @@ namespace MediaBrowser.Providers.Manager
             return true;
         }
 
-        private bool CanRefresh(IImageProvider provider, IHasImages item, MetadataOptions options, ImageRefreshOptions refreshOptions, bool includeDisabled)
+        private bool CanRefresh(IImageProvider provider, IHasMetadata item, MetadataOptions options, ImageRefreshOptions refreshOptions, bool includeDisabled)
         {
             if (!includeDisabled)
             {
@@ -530,7 +528,7 @@ namespace MediaBrowser.Providers.Manager
         }
 
         private void AddImagePlugins<T>(List<MetadataPlugin> list, T item, List<IImageProvider> imageProviders)
-            where T : IHasImages
+            where T : IHasMetadata
         {
 
             // Locals
@@ -550,7 +548,7 @@ namespace MediaBrowser.Providers.Manager
             }));
         }
 
-        public MetadataOptions GetMetadataOptions(IHasImages item)
+        public MetadataOptions GetMetadataOptions(IHasMetadata item)
         {
             var type = item.GetType().Name;
 
diff --git a/MediaBrowser.Providers/Manager/ProviderUtils.cs b/MediaBrowser.Providers/Manager/ProviderUtils.cs
index 93a386ed59..a200b18b57 100644
--- a/MediaBrowser.Providers/Manager/ProviderUtils.cs
+++ b/MediaBrowser.Providers/Manager/ProviderUtils.cs
@@ -13,7 +13,7 @@ namespace MediaBrowser.Providers.Manager
     {
         public static void MergeBaseItemData<T>(MetadataResult<T> sourceResult,
             MetadataResult<T> targetResult,
-            List<MetadataFields> lockedFields,
+            MetadataFields[] lockedFields,
             bool replaceData,
             bool mergeMetadataSettings)
             where T : BaseItem
@@ -150,7 +150,7 @@ namespace MediaBrowser.Providers.Manager
 
             if (!lockedFields.Contains(MetadataFields.Studios))
             {
-                if (replaceData || target.Studios.Count == 0)
+                if (replaceData || target.Studios.Length == 0)
                 {
                     target.Studios = source.Studios;
                 }
@@ -158,7 +158,7 @@ namespace MediaBrowser.Providers.Manager
 
             if (!lockedFields.Contains(MetadataFields.Tags))
             {
-                if (replaceData || target.Tags.Count == 0)
+                if (replaceData || target.Tags.Length == 0)
                 {
                     target.Tags = source.Tags;
                 }
@@ -166,7 +166,7 @@ namespace MediaBrowser.Providers.Manager
 
             if (!lockedFields.Contains(MetadataFields.ProductionLocations))
             {
-                if (replaceData || target.ProductionLocations.Count == 0)
+                if (replaceData || target.ProductionLocations.Length == 0)
                 {
                     target.ProductionLocations = source.ProductionLocations;
                 }
@@ -266,7 +266,7 @@ namespace MediaBrowser.Providers.Manager
             target.PreferredMetadataLanguage = source.PreferredMetadataLanguage;
         }
 
-        private static void MergeDisplayOrder(BaseItem source, BaseItem target, List<MetadataFields> lockedFields, bool replaceData)
+        private static void MergeDisplayOrder(BaseItem source, BaseItem target, MetadataFields[] lockedFields, bool replaceData)
         {
             var sourceHasDisplayOrder = source as IHasDisplayOrder;
             var targetHasDisplayOrder = target as IHasDisplayOrder;
@@ -277,7 +277,7 @@ namespace MediaBrowser.Providers.Manager
             }
         }
 
-        private static void MergeAlbumArtist(BaseItem source, BaseItem target, List<MetadataFields> lockedFields, bool replaceData)
+        private static void MergeAlbumArtist(BaseItem source, BaseItem target, MetadataFields[] lockedFields, bool replaceData)
         {
             var sourceHasAlbumArtist = source as IHasAlbumArtist;
             var targetHasAlbumArtist = target as IHasAlbumArtist;
@@ -291,7 +291,7 @@ namespace MediaBrowser.Providers.Manager
             }
         }
 
-        private static void MergeCriticRating(BaseItem source, BaseItem target, List<MetadataFields> lockedFields, bool replaceData)
+        private static void MergeCriticRating(BaseItem source, BaseItem target, MetadataFields[] lockedFields, bool replaceData)
         {
             if (replaceData || !target.CriticRating.HasValue)
             {
@@ -299,7 +299,7 @@ namespace MediaBrowser.Providers.Manager
             }
         }
 
-        private static void MergeTrailers(BaseItem source, BaseItem target, List<MetadataFields> lockedFields, bool replaceData)
+        private static void MergeTrailers(BaseItem source, BaseItem target, MetadataFields[] lockedFields, bool replaceData)
         {
             var sourceCast = source as IHasTrailers;
             var targetCast = target as IHasTrailers;
@@ -313,7 +313,7 @@ namespace MediaBrowser.Providers.Manager
             }
         }
 
-        private static void MergeVideoInfo(BaseItem source, BaseItem target, List<MetadataFields> lockedFields, bool replaceData)
+        private static void MergeVideoInfo(BaseItem source, BaseItem target, MetadataFields[] lockedFields, bool replaceData)
         {
             var sourceCast = source as Video;
             var targetCast = target as Video;
diff --git a/MediaBrowser.Providers/MediaInfo/AudioImageProvider.cs b/MediaBrowser.Providers/MediaInfo/AudioImageProvider.cs
index e406932ed8..b8b6032452 100644
--- a/MediaBrowser.Providers/MediaInfo/AudioImageProvider.cs
+++ b/MediaBrowser.Providers/MediaInfo/AudioImageProvider.cs
@@ -12,6 +12,7 @@ using System.Linq;
 using System.Threading;
 using System.Threading.Tasks;
 using MediaBrowser.Model.IO;
+using MediaBrowser.Model.Extensions;
 
 namespace MediaBrowser.Providers.MediaInfo
 {
@@ -31,12 +32,12 @@ namespace MediaBrowser.Providers.MediaInfo
             _fileSystem = fileSystem;
         }
 
-        public IEnumerable<ImageType> GetSupportedImages(IHasImages item)
+        public IEnumerable<ImageType> GetSupportedImages(IHasMetadata item)
         {
             return new List<ImageType> { ImageType.Primary };
         }
 
-        public Task<DynamicImageResponse> GetImage(IHasImages item, ImageType type, CancellationToken cancellationToken)
+        public Task<DynamicImageResponse> GetImage(IHasMetadata item, ImageType type, CancellationToken cancellationToken)
         {
             var audio = (Audio)item;
 
@@ -92,7 +93,7 @@ namespace MediaBrowser.Providers.MediaInfo
         private string GetAudioImagePath(Audio item)
         {
             var filename = item.Album ?? string.Empty;
-            filename += string.Join(",", item.Artists.ToArray());
+            filename += string.Join(",", item.Artists.ToArray(item.Artists.Count));
 
             if (!string.IsNullOrWhiteSpace(item.Album))
             {
@@ -127,7 +128,7 @@ namespace MediaBrowser.Providers.MediaInfo
             get { return "Image Extractor"; }
         }
 
-        public bool Supports(IHasImages item)
+        public bool Supports(IHasMetadata item)
         {
             var audio = item as Audio;
 
diff --git a/MediaBrowser.Providers/MediaInfo/FFProbeAudioInfo.cs b/MediaBrowser.Providers/MediaInfo/FFProbeAudioInfo.cs
index 12d1d3468b..b0785298b8 100644
--- a/MediaBrowser.Providers/MediaInfo/FFProbeAudioInfo.cs
+++ b/MediaBrowser.Providers/MediaInfo/FFProbeAudioInfo.cs
@@ -13,6 +13,7 @@ using System.Globalization;
 using System.IO;
 using System.Threading;
 using System.Threading.Tasks;
+using System.Linq;
 
 namespace MediaBrowser.Providers.MediaInfo
 {
@@ -165,12 +166,7 @@ namespace MediaBrowser.Providers.MediaInfo
 
             if (!audio.LockedFields.Contains(MetadataFields.Studios))
             {
-                audio.Studios.Clear();
-
-                foreach (var studio in data.Studios)
-                {
-                    audio.AddStudio(studio);
-                }
+                audio.SetStudios(data.Studios);
             }
 
             audio.SetProviderId(MetadataProviders.MusicBrainzAlbumArtist, data.GetProviderId(MetadataProviders.MusicBrainzAlbumArtist));
diff --git a/MediaBrowser.Providers/MediaInfo/FFProbeVideoInfo.cs b/MediaBrowser.Providers/MediaInfo/FFProbeVideoInfo.cs
index 143ec8fdd6..7956b52af9 100644
--- a/MediaBrowser.Providers/MediaInfo/FFProbeVideoInfo.cs
+++ b/MediaBrowser.Providers/MediaInfo/FFProbeVideoInfo.cs
@@ -376,14 +376,9 @@ namespace MediaBrowser.Providers.MediaInfo
 
             if (!video.IsLocked && !video.LockedFields.Contains(MetadataFields.Studios))
             {
-                if (video.Studios.Count == 0 || isFullRefresh)
+                if (video.Studios.Length == 0 || isFullRefresh)
                 {
-                    video.Studios.Clear();
-
-                    foreach (var studio in data.Studios)
-                    {
-                        video.AddStudio(studio);
-                    }
+                    video.SetStudios(data.Studios);
                 }
             }
 
diff --git a/MediaBrowser.Providers/MediaInfo/SubtitleResolver.cs b/MediaBrowser.Providers/MediaInfo/SubtitleResolver.cs
index dfa705126a..465c417e72 100644
--- a/MediaBrowser.Providers/MediaInfo/SubtitleResolver.cs
+++ b/MediaBrowser.Providers/MediaInfo/SubtitleResolver.cs
@@ -133,7 +133,7 @@ namespace MediaBrowser.Providers.MediaInfo
                 throw new ArgumentException(string.Format("Cannot search for items that don't have a path: {0} {1}", video.Name, video.Id));
             }
 
-            var files = directoryService.GetFilePaths(containingPath, clearCache);
+            var files = fileSystem.GetFilePaths(containingPath, clearCache);
 
             var videoFileNameWithoutExtension = fileSystem.GetFileNameWithoutExtension(video.Path);
 
diff --git a/MediaBrowser.Providers/MediaInfo/SubtitleScheduledTask.cs b/MediaBrowser.Providers/MediaInfo/SubtitleScheduledTask.cs
index 200615a5d0..61cf1cfc3c 100644
--- a/MediaBrowser.Providers/MediaInfo/SubtitleScheduledTask.cs
+++ b/MediaBrowser.Providers/MediaInfo/SubtitleScheduledTask.cs
@@ -17,6 +17,7 @@ using System.IO;
 using MediaBrowser.Controller.Dto;
 using MediaBrowser.Model.Serialization;
 using MediaBrowser.Model.Tasks;
+using MediaBrowser.Model.Extensions;
 
 namespace MediaBrowser.Providers.MediaInfo
 {
@@ -83,7 +84,7 @@ namespace MediaBrowser.Providers.MediaInfo
             {
                 MediaTypes = new string[] { MediaType.Video },
                 IsVirtualItem = false,
-                IncludeItemTypes = types.ToArray(),
+                IncludeItemTypes = types.ToArray(types.Count),
                 DtoOptions = new DtoOptions(true)
 
             }).OfType<Video>()
diff --git a/MediaBrowser.Providers/MediaInfo/VideoImageProvider.cs b/MediaBrowser.Providers/MediaInfo/VideoImageProvider.cs
index 26a795a7db..f666d8b7ff 100644
--- a/MediaBrowser.Providers/MediaInfo/VideoImageProvider.cs
+++ b/MediaBrowser.Providers/MediaInfo/VideoImageProvider.cs
@@ -29,12 +29,12 @@ namespace MediaBrowser.Providers.MediaInfo
             _fileSystem = fileSystem;
         }
 
-        public IEnumerable<ImageType> GetSupportedImages(IHasImages item)
+        public IEnumerable<ImageType> GetSupportedImages(IHasMetadata item)
         {
             return new List<ImageType> { ImageType.Primary };
         }
 
-        public Task<DynamicImageResponse> GetImage(IHasImages item, ImageType type, CancellationToken cancellationToken)
+        public Task<DynamicImageResponse> GetImage(IHasMetadata item, ImageType type, CancellationToken cancellationToken)
         {
             var video = (Video)item;
 
@@ -129,7 +129,7 @@ namespace MediaBrowser.Providers.MediaInfo
             get { return "Screen Grabber"; }
         }
 
-        public bool Supports(IHasImages item)
+        public bool Supports(IHasMetadata item)
         {
             var video = item as Video;
 
diff --git a/MediaBrowser.Providers/Movies/FanartMovieImageProvider.cs b/MediaBrowser.Providers/Movies/FanartMovieImageProvider.cs
index c3aa87a22f..0214788ab4 100644
--- a/MediaBrowser.Providers/Movies/FanartMovieImageProvider.cs
+++ b/MediaBrowser.Providers/Movies/FanartMovieImageProvider.cs
@@ -60,12 +60,12 @@ namespace MediaBrowser.Providers.Movies
             get { return "FanArt"; }
         }
 
-        public bool Supports(IHasImages item)
+        public bool Supports(IHasMetadata item)
         {
             return item is Movie || item is BoxSet || item is MusicVideo;
         }
 
-        public IEnumerable<ImageType> GetSupportedImages(IHasImages item)
+        public IEnumerable<ImageType> GetSupportedImages(IHasMetadata item)
         {
             return new List<ImageType>
             {
@@ -79,7 +79,7 @@ namespace MediaBrowser.Providers.Movies
             };
         }
 
-        public async Task<IEnumerable<RemoteImageInfo>> GetImages(IHasImages item, CancellationToken cancellationToken)
+        public async Task<IEnumerable<RemoteImageInfo>> GetImages(IHasMetadata item, CancellationToken cancellationToken)
         {
             var baseItem = (BaseItem)item;
             var list = new List<RemoteImageInfo>();
diff --git a/MediaBrowser.Providers/Movies/GenericMovieDbInfo.cs b/MediaBrowser.Providers/Movies/GenericMovieDbInfo.cs
index db621e554b..ddf3e4d1a2 100644
--- a/MediaBrowser.Providers/Movies/GenericMovieDbInfo.cs
+++ b/MediaBrowser.Providers/Movies/GenericMovieDbInfo.cs
@@ -146,7 +146,7 @@ namespace MediaBrowser.Providers.Movies
                 movie.ProductionLocations = movieData
                     .production_countries
                     .Select(i => i.name)
-                    .ToList();
+                    .ToArray(movieData.production_countries.Count);
             }
 
             movie.SetProviderId(MetadataProviders.Tmdb, movieData.id.ToString(_usCulture));
@@ -213,12 +213,7 @@ namespace MediaBrowser.Providers.Movies
             //studios
             if (movieData.production_companies != null)
             {
-                movie.Studios.Clear();
-
-                foreach (var studio in movieData.production_companies.Select(c => c.name))
-                {
-                    movie.AddStudio(studio);
-                }
+                movie.SetStudios(movieData.production_companies.Select(c => c.name));
             }
 
             // genres
diff --git a/MediaBrowser.Providers/Movies/MovieDbImageProvider.cs b/MediaBrowser.Providers/Movies/MovieDbImageProvider.cs
index 215b391817..8dc4bd56ac 100644
--- a/MediaBrowser.Providers/Movies/MovieDbImageProvider.cs
+++ b/MediaBrowser.Providers/Movies/MovieDbImageProvider.cs
@@ -41,12 +41,12 @@ namespace MediaBrowser.Providers.Movies
             get { return "TheMovieDb"; }
         }
 
-        public bool Supports(IHasImages item)
+        public bool Supports(IHasMetadata item)
         {
             return item is Movie || item is MusicVideo || item is Trailer;
         }
 
-        public IEnumerable<ImageType> GetSupportedImages(IHasImages item)
+        public IEnumerable<ImageType> GetSupportedImages(IHasMetadata item)
         {
             return new List<ImageType>
             {
@@ -55,7 +55,7 @@ namespace MediaBrowser.Providers.Movies
             };
         }
 
-        public async Task<IEnumerable<RemoteImageInfo>> GetImages(IHasImages item, CancellationToken cancellationToken)
+        public async Task<IEnumerable<RemoteImageInfo>> GetImages(IHasMetadata item, CancellationToken cancellationToken)
         {
             var list = new List<RemoteImageInfo>();
 
@@ -127,8 +127,7 @@ namespace MediaBrowser.Providers.Movies
                 return 0;
             })
                 .ThenByDescending(i => i.CommunityRating ?? 0)
-                .ThenByDescending(i => i.VoteCount ?? 0)
-                .ToList();
+                .ThenByDescending(i => i.VoteCount ?? 0);
         }
 
         /// <summary>
@@ -149,8 +148,7 @@ namespace MediaBrowser.Providers.Movies
         private IEnumerable<MovieDbProvider.Backdrop> GetBackdrops(MovieDbProvider.Images images)
         {
             var eligibleBackdrops = images.backdrops == null ? new List<MovieDbProvider.Backdrop>() :
-                images.backdrops
-                .ToList();
+                images.backdrops;
 
             return eligibleBackdrops.OrderByDescending(i => i.vote_average)
                 .ThenByDescending(i => i.vote_count);
diff --git a/MediaBrowser.Providers/Movies/MovieDbProvider.cs b/MediaBrowser.Providers/Movies/MovieDbProvider.cs
index fe190afb41..ec1c497426 100644
--- a/MediaBrowser.Providers/Movies/MovieDbProvider.cs
+++ b/MediaBrowser.Providers/Movies/MovieDbProvider.cs
@@ -22,6 +22,7 @@ using MediaBrowser.Common;
 using MediaBrowser.Controller.IO;
 using MediaBrowser.Model.Globalization;
 using MediaBrowser.Model.Net;
+using MediaBrowser.Model.Extensions;
 
 namespace MediaBrowser.Providers.Movies
 {
@@ -282,7 +283,7 @@ namespace MediaBrowser.Providers.Movies
                 languages.Add("en");
             }
 
-            return string.Join(",", languages.ToArray());
+            return string.Join(",", languages.ToArray(languages.Count));
         }
 
         public static string NormalizeLanguage(string language)
diff --git a/MediaBrowser.Providers/Movies/MovieMetadataService.cs b/MediaBrowser.Providers/Movies/MovieMetadataService.cs
index 333d289ec7..dc3146f2a9 100644
--- a/MediaBrowser.Providers/Movies/MovieMetadataService.cs
+++ b/MediaBrowser.Providers/Movies/MovieMetadataService.cs
@@ -28,7 +28,7 @@ namespace MediaBrowser.Providers.Movies
             return base.IsFullLocalMetadata(item);
         }
 
-        protected override void MergeData(MetadataResult<Movie> source, MetadataResult<Movie> target, List<MetadataFields> lockedFields, bool replaceData, bool mergeMetadataSettings)
+        protected override void MergeData(MetadataResult<Movie> source, MetadataResult<Movie> target, MetadataFields[] lockedFields, bool replaceData, bool mergeMetadataSettings)
         {
             ProviderUtils.MergeBaseItemData(source, target, lockedFields, replaceData, mergeMetadataSettings);
 
@@ -61,7 +61,7 @@ namespace MediaBrowser.Providers.Movies
             return base.IsFullLocalMetadata(item);
         }
 
-        protected override void MergeData(MetadataResult<Trailer> source, MetadataResult<Trailer> target, List<MetadataFields> lockedFields, bool replaceData, bool mergeMetadataSettings)
+        protected override void MergeData(MetadataResult<Trailer> source, MetadataResult<Trailer> target, MetadataFields[] lockedFields, bool replaceData, bool mergeMetadataSettings)
         {
             ProviderUtils.MergeBaseItemData(source, target, lockedFields, replaceData, mergeMetadataSettings);
 
diff --git a/MediaBrowser.Providers/Music/AlbumImageFromSongProvider.cs b/MediaBrowser.Providers/Music/AlbumImageFromSongProvider.cs
index 0cb1a7ff13..57e20b8526 100644
--- a/MediaBrowser.Providers/Music/AlbumImageFromSongProvider.cs
+++ b/MediaBrowser.Providers/Music/AlbumImageFromSongProvider.cs
@@ -11,12 +11,12 @@ namespace MediaBrowser.Providers.Music
 {
     public class AlbumImageFromSongProvider : IDynamicImageProvider
     {
-        public IEnumerable<ImageType> GetSupportedImages(IHasImages item)
+        public IEnumerable<ImageType> GetSupportedImages(IHasMetadata item)
         {
             return new List<ImageType> { ImageType.Primary };
         }
 
-        public Task<DynamicImageResponse> GetImage(IHasImages item, ImageType type, CancellationToken cancellationToken)
+        public Task<DynamicImageResponse> GetImage(IHasMetadata item, ImageType type, CancellationToken cancellationToken)
         {
             var album = (MusicAlbum)item;
 
@@ -38,7 +38,7 @@ namespace MediaBrowser.Providers.Music
             get { return "Image Extractor"; }
         }
 
-        public bool Supports(IHasImages item)
+        public bool Supports(IHasMetadata item)
         {
             return item is MusicAlbum;
         }
diff --git a/MediaBrowser.Providers/Music/AlbumMetadataService.cs b/MediaBrowser.Providers/Music/AlbumMetadataService.cs
index bba40608c6..839bec6045 100644
--- a/MediaBrowser.Providers/Music/AlbumMetadataService.cs
+++ b/MediaBrowser.Providers/Music/AlbumMetadataService.cs
@@ -44,13 +44,13 @@ namespace MediaBrowser.Providers.Music
 
                     if (!item.LockedFields.Contains(MetadataFields.Studios))
                     {
-                        var currentList = item.Studios.ToList();
+                        var currentList = item.Studios;
 
                         item.Studios = songs.SelectMany(i => i.Studios)
                             .Distinct(StringComparer.OrdinalIgnoreCase)
-                            .ToList();
+                            .ToArray();
 
-                        if (currentList.Count != item.Studios.Count || !currentList.OrderBy(i => i).SequenceEqual(item.Studios.OrderBy(i => i), StringComparer.OrdinalIgnoreCase))
+                        if (currentList.Length != item.Studios.Length || !currentList.OrderBy(i => i).SequenceEqual(item.Studios.OrderBy(i => i), StringComparer.OrdinalIgnoreCase))
                         {
                             updateType = updateType | ItemUpdateType.MetadataEdit;
                         }
@@ -151,7 +151,7 @@ namespace MediaBrowser.Providers.Music
             return updateType;
         }
 
-        protected override void MergeData(MetadataResult<MusicAlbum> source, MetadataResult<MusicAlbum> target, List<MetadataFields> lockedFields, bool replaceData, bool mergeMetadataSettings)
+        protected override void MergeData(MetadataResult<MusicAlbum> source, MetadataResult<MusicAlbum> target, MetadataFields[] lockedFields, bool replaceData, bool mergeMetadataSettings)
         {
             ProviderUtils.MergeBaseItemData(source, target, lockedFields, replaceData, mergeMetadataSettings);
 
diff --git a/MediaBrowser.Providers/Music/ArtistMetadataService.cs b/MediaBrowser.Providers/Music/ArtistMetadataService.cs
index 98fe766e0a..c8008ba1ec 100644
--- a/MediaBrowser.Providers/Music/ArtistMetadataService.cs
+++ b/MediaBrowser.Providers/Music/ArtistMetadataService.cs
@@ -29,7 +29,7 @@ namespace MediaBrowser.Providers.Music
                             Recursive = true,
                             IsFolder = false
                         }) :
-                        item.GetRecursiveChildren(i => i is IHasArtist && !i.IsFolder).ToList();
+                        item.GetRecursiveChildren(i => i is IHasArtist && !i.IsFolder);
 
                     var currentList = item.Genres.ToList();
 
@@ -47,7 +47,7 @@ namespace MediaBrowser.Providers.Music
             return updateType;
         }
 
-        protected override void MergeData(MetadataResult<MusicArtist> source, MetadataResult<MusicArtist> target, List<MetadataFields> lockedFields, bool replaceData, bool mergeMetadataSettings)
+        protected override void MergeData(MetadataResult<MusicArtist> source, MetadataResult<MusicArtist> target, MetadataFields[] lockedFields, bool replaceData, bool mergeMetadataSettings)
         {
             ProviderUtils.MergeBaseItemData(source, target, lockedFields, replaceData, mergeMetadataSettings);
         }
diff --git a/MediaBrowser.Providers/Music/AudioDbAlbumImageProvider.cs b/MediaBrowser.Providers/Music/AudioDbAlbumImageProvider.cs
index c13d19c436..0ce221b065 100644
--- a/MediaBrowser.Providers/Music/AudioDbAlbumImageProvider.cs
+++ b/MediaBrowser.Providers/Music/AudioDbAlbumImageProvider.cs
@@ -25,7 +25,7 @@ namespace MediaBrowser.Providers.Music
             _json = json;
         }
 
-        public IEnumerable<ImageType> GetSupportedImages(IHasImages item)
+        public IEnumerable<ImageType> GetSupportedImages(IHasMetadata item)
         {
             return new List<ImageType>
             {
@@ -34,7 +34,7 @@ namespace MediaBrowser.Providers.Music
             };
         }
 
-        public async Task<IEnumerable<RemoteImageInfo>> GetImages(IHasImages item, CancellationToken cancellationToken)
+        public async Task<IEnumerable<RemoteImageInfo>> GetImages(IHasMetadata item, CancellationToken cancellationToken)
         {
             var id = item.GetProviderId(MetadataProviders.MusicBrainzReleaseGroup);
 
@@ -105,7 +105,7 @@ namespace MediaBrowser.Providers.Music
             }
         }
 
-        public bool Supports(IHasImages item)
+        public bool Supports(IHasMetadata item)
         {
             return item is MusicAlbum;
         }
diff --git a/MediaBrowser.Providers/Music/AudioDbArtistImageProvider.cs b/MediaBrowser.Providers/Music/AudioDbArtistImageProvider.cs
index 6ca1d83d8a..dded509e2f 100644
--- a/MediaBrowser.Providers/Music/AudioDbArtistImageProvider.cs
+++ b/MediaBrowser.Providers/Music/AudioDbArtistImageProvider.cs
@@ -25,7 +25,7 @@ namespace MediaBrowser.Providers.Music
             _httpClient = httpClient;
         }
 
-        public IEnumerable<ImageType> GetSupportedImages(IHasImages item)
+        public IEnumerable<ImageType> GetSupportedImages(IHasMetadata item)
         {
             return new List<ImageType>
             {
@@ -36,7 +36,7 @@ namespace MediaBrowser.Providers.Music
             };
         }
 
-        public async Task<IEnumerable<RemoteImageInfo>> GetImages(IHasImages item, CancellationToken cancellationToken)
+        public async Task<IEnumerable<RemoteImageInfo>> GetImages(IHasMetadata item, CancellationToken cancellationToken)
         {
             var id = item.GetProviderId(MetadataProviders.MusicBrainzArtist);
 
@@ -138,7 +138,7 @@ namespace MediaBrowser.Providers.Music
             get { return "TheAudioDB"; }
         }
 
-        public bool Supports(IHasImages item)
+        public bool Supports(IHasMetadata item)
         {
             return item is MusicArtist;
         }
diff --git a/MediaBrowser.Providers/Music/AudioMetadataService.cs b/MediaBrowser.Providers/Music/AudioMetadataService.cs
index 4d791be01a..647ac2bff3 100644
--- a/MediaBrowser.Providers/Music/AudioMetadataService.cs
+++ b/MediaBrowser.Providers/Music/AudioMetadataService.cs
@@ -8,12 +8,13 @@ using MediaBrowser.Providers.Manager;
 using System.Collections.Generic;
 using System.Linq;
 using MediaBrowser.Model.IO;
+using MediaBrowser.Model.Extensions;
 
 namespace MediaBrowser.Providers.Music
 {
     public class AudioMetadataService : MetadataService<Audio, SongInfo>
     {
-        protected override void MergeData(MetadataResult<Audio> source, MetadataResult<Audio> target, List<MetadataFields> lockedFields, bool replaceData, bool mergeMetadataSettings)
+        protected override void MergeData(MetadataResult<Audio> source, MetadataResult<Audio> target, MetadataFields[] lockedFields, bool replaceData, bool mergeMetadataSettings)
         {
             ProviderUtils.MergeBaseItemData(source, target, lockedFields, replaceData, mergeMetadataSettings);
 
@@ -22,7 +23,7 @@ namespace MediaBrowser.Providers.Music
 
             if (replaceData || targetItem.Artists.Count == 0)
             {
-                targetItem.Artists = sourceItem.Artists.ToList();
+                targetItem.Artists = sourceItem.Artists.ToList(sourceItem.Artists.Count);
             }
 
             if (replaceData || string.IsNullOrEmpty(targetItem.Album))
diff --git a/MediaBrowser.Providers/Music/FanArtAlbumProvider.cs b/MediaBrowser.Providers/Music/FanArtAlbumProvider.cs
index 5700b23866..7a6826d319 100644
--- a/MediaBrowser.Providers/Music/FanArtAlbumProvider.cs
+++ b/MediaBrowser.Providers/Music/FanArtAlbumProvider.cs
@@ -47,12 +47,12 @@ namespace MediaBrowser.Providers.Music
             get { return "FanArt"; }
         }
 
-        public bool Supports(IHasImages item)
+        public bool Supports(IHasMetadata item)
         {
             return item is MusicAlbum;
         }
 
-        public IEnumerable<ImageType> GetSupportedImages(IHasImages item)
+        public IEnumerable<ImageType> GetSupportedImages(IHasMetadata item)
         {
             return new List<ImageType>
             {
@@ -61,7 +61,7 @@ namespace MediaBrowser.Providers.Music
             };
         }
 
-        public async Task<IEnumerable<RemoteImageInfo>> GetImages(IHasImages item, CancellationToken cancellationToken)
+        public async Task<IEnumerable<RemoteImageInfo>> GetImages(IHasMetadata item, CancellationToken cancellationToken)
         {
             var album = (MusicAlbum)item;
 
diff --git a/MediaBrowser.Providers/Music/FanArtArtistProvider.cs b/MediaBrowser.Providers/Music/FanArtArtistProvider.cs
index eefebed292..6094fd26ec 100644
--- a/MediaBrowser.Providers/Music/FanArtArtistProvider.cs
+++ b/MediaBrowser.Providers/Music/FanArtArtistProvider.cs
@@ -58,12 +58,12 @@ namespace MediaBrowser.Providers.Music
             get { return "FanArt"; }
         }
 
-        public bool Supports(IHasImages item)
+        public bool Supports(IHasMetadata item)
         {
             return item is MusicArtist;
         }
 
-        public IEnumerable<ImageType> GetSupportedImages(IHasImages item)
+        public IEnumerable<ImageType> GetSupportedImages(IHasMetadata item)
         {
             return new List<ImageType>
             {
@@ -75,7 +75,7 @@ namespace MediaBrowser.Providers.Music
             };
         }
 
-        public async Task<IEnumerable<RemoteImageInfo>> GetImages(IHasImages item, CancellationToken cancellationToken)
+        public async Task<IEnumerable<RemoteImageInfo>> GetImages(IHasMetadata item, CancellationToken cancellationToken)
         {
             var artist = (MusicArtist)item;
 
diff --git a/MediaBrowser.Providers/Music/MusicBrainzAlbumProvider.cs b/MediaBrowser.Providers/Music/MusicBrainzAlbumProvider.cs
index b77fcf1b28..17b5196de0 100644
--- a/MediaBrowser.Providers/Music/MusicBrainzAlbumProvider.cs
+++ b/MediaBrowser.Providers/Music/MusicBrainzAlbumProvider.cs
@@ -17,6 +17,7 @@ using System.Threading.Tasks;
 using System.Xml;
 using MediaBrowser.Model.Serialization;
 using MediaBrowser.Model.Xml;
+using MediaBrowser.Model.Extensions;
 
 namespace MediaBrowser.Providers.Music
 {
@@ -123,7 +124,8 @@ namespace MediaBrowser.Providers.Music
                         }
 
                         return result;
-                    }).ToList();
+
+                    }).ToList(results.Count);
                 }
             }
         }
@@ -619,7 +621,7 @@ namespace MediaBrowser.Providers.Music
                 }
             }
 
-            _mbzUrls = list.ToList();
+            _mbzUrls = list.ToList(list.Count);
 
             return list;
         }
diff --git a/MediaBrowser.Providers/Music/MusicBrainzArtistProvider.cs b/MediaBrowser.Providers/Music/MusicBrainzArtistProvider.cs
index 1a2b13e946..06f60c8a37 100644
--- a/MediaBrowser.Providers/Music/MusicBrainzArtistProvider.cs
+++ b/MediaBrowser.Providers/Music/MusicBrainzArtistProvider.cs
@@ -50,7 +50,7 @@ namespace MediaBrowser.Providers.Music
 
                 using (var stream = await MusicBrainzAlbumProvider.Current.GetMusicBrainzResponse(url, true, cancellationToken).ConfigureAwait(false))
                 {
-                    var results = GetResultsFromResponse(stream).ToList();
+                    var results = GetResultsFromResponse(stream);
 
                     if (results.Count > 0)
                     {
@@ -73,7 +73,7 @@ namespace MediaBrowser.Providers.Music
             return new List<RemoteSearchResult>();
         }
 
-        private IEnumerable<RemoteSearchResult> GetResultsFromResponse(Stream stream)
+        private List<RemoteSearchResult> GetResultsFromResponse(Stream stream)
         {
             using (var oReader = new StreamReader(stream, Encoding.UTF8))
             {
@@ -125,7 +125,7 @@ namespace MediaBrowser.Providers.Music
             }
         }
 
-        private IEnumerable<RemoteSearchResult> ParseArtistList(XmlReader reader)
+        private List<RemoteSearchResult> ParseArtistList(XmlReader reader)
         {
             var list = new List<RemoteSearchResult>();
 
diff --git a/MediaBrowser.Providers/Music/MusicVideoMetadataService.cs b/MediaBrowser.Providers/Music/MusicVideoMetadataService.cs
index b8f6e2c633..40736619a7 100644
--- a/MediaBrowser.Providers/Music/MusicVideoMetadataService.cs
+++ b/MediaBrowser.Providers/Music/MusicVideoMetadataService.cs
@@ -10,12 +10,13 @@ using System.Linq;
 
 using MediaBrowser.Controller.IO;
 using MediaBrowser.Model.IO;
+using MediaBrowser.Model.Extensions;
 
 namespace MediaBrowser.Providers.Music
 {
     class MusicVideoMetadataService : MetadataService<MusicVideo, MusicVideoInfo>
     {
-        protected override void MergeData(MetadataResult<MusicVideo> source, MetadataResult<MusicVideo> target, List<MetadataFields> lockedFields, bool replaceData, bool mergeMetadataSettings)
+        protected override void MergeData(MetadataResult<MusicVideo> source, MetadataResult<MusicVideo> target, MetadataFields[] lockedFields, bool replaceData, bool mergeMetadataSettings)
         {
             ProviderUtils.MergeBaseItemData(source, target, lockedFields, replaceData, mergeMetadataSettings);
 
@@ -29,7 +30,7 @@ namespace MediaBrowser.Providers.Music
 
             if (replaceData || targetItem.Artists.Count == 0)
             {
-                targetItem.Artists = sourceItem.Artists.ToList();
+                targetItem.Artists = sourceItem.Artists.ToList(sourceItem.Artists.Count);
             }
         }
 
diff --git a/MediaBrowser.Providers/MusicGenres/MusicGenreMetadataService.cs b/MediaBrowser.Providers/MusicGenres/MusicGenreMetadataService.cs
index ba059bd7b8..3828f8d274 100644
--- a/MediaBrowser.Providers/MusicGenres/MusicGenreMetadataService.cs
+++ b/MediaBrowser.Providers/MusicGenres/MusicGenreMetadataService.cs
@@ -14,7 +14,7 @@ namespace MediaBrowser.Providers.MusicGenres
 {
     public class MusicGenreMetadataService : MetadataService<MusicGenre, ItemLookupInfo>
     {
-        protected override void MergeData(MetadataResult<MusicGenre> source, MetadataResult<MusicGenre> target, List<MetadataFields> lockedFields, bool replaceData, bool mergeMetadataSettings)
+        protected override void MergeData(MetadataResult<MusicGenre> source, MetadataResult<MusicGenre> target, MetadataFields[] lockedFields, bool replaceData, bool mergeMetadataSettings)
         {
             ProviderUtils.MergeBaseItemData(source, target, lockedFields, replaceData, mergeMetadataSettings);
         }
diff --git a/MediaBrowser.Providers/Omdb/OmdbImageProvider.cs b/MediaBrowser.Providers/Omdb/OmdbImageProvider.cs
index f8b3ba1551..74bfa6e039 100644
--- a/MediaBrowser.Providers/Omdb/OmdbImageProvider.cs
+++ b/MediaBrowser.Providers/Omdb/OmdbImageProvider.cs
@@ -32,7 +32,7 @@ namespace MediaBrowser.Providers.Omdb
             _configurationManager = configurationManager;
         }
 
-        public IEnumerable<ImageType> GetSupportedImages(IHasImages item)
+        public IEnumerable<ImageType> GetSupportedImages(IHasMetadata item)
         {
             return new List<ImageType>
             {
@@ -40,7 +40,7 @@ namespace MediaBrowser.Providers.Omdb
             };
         }
 
-        public async Task<IEnumerable<RemoteImageInfo>> GetImages(IHasImages item, CancellationToken cancellationToken)
+        public async Task<IEnumerable<RemoteImageInfo>> GetImages(IHasMetadata item, CancellationToken cancellationToken)
         {
             var imdbId = item.GetProviderId(MetadataProviders.Imdb);
 
@@ -91,7 +91,7 @@ namespace MediaBrowser.Providers.Omdb
             get { return "The Open Movie Database"; }
         }
 
-        public bool Supports(IHasImages item)
+        public bool Supports(IHasMetadata item)
         {
             return item is Movie || item is Trailer || item is Episode;
         }
diff --git a/MediaBrowser.Providers/People/MovieDbPersonImageProvider.cs b/MediaBrowser.Providers/People/MovieDbPersonImageProvider.cs
index 3728137902..4dfcdba09f 100644
--- a/MediaBrowser.Providers/People/MovieDbPersonImageProvider.cs
+++ b/MediaBrowser.Providers/People/MovieDbPersonImageProvider.cs
@@ -37,12 +37,12 @@ namespace MediaBrowser.Providers.People
             get { return "TheMovieDb"; }
         }
 
-        public bool Supports(IHasImages item)
+        public bool Supports(IHasMetadata item)
         {
             return item is Person;
         }
 
-        public IEnumerable<ImageType> GetSupportedImages(IHasImages item)
+        public IEnumerable<ImageType> GetSupportedImages(IHasMetadata item)
         {
             return new List<ImageType>
             {
@@ -50,7 +50,7 @@ namespace MediaBrowser.Providers.People
             };
         }
 
-        public async Task<IEnumerable<RemoteImageInfo>> GetImages(IHasImages item, CancellationToken cancellationToken)
+        public async Task<IEnumerable<RemoteImageInfo>> GetImages(IHasMetadata item, CancellationToken cancellationToken)
         {
             var person = (Person)item;
             var id = person.GetProviderId(MetadataProviders.Tmdb);
@@ -116,8 +116,7 @@ namespace MediaBrowser.Providers.People
                 return 0;
             })
                 .ThenByDescending(i => i.CommunityRating ?? 0)
-                .ThenByDescending(i => i.VoteCount ?? 0)
-                .ToList();
+                .ThenByDescending(i => i.VoteCount ?? 0);
         }
 
         private string GetLanguage(MovieDbPersonProvider.Profile profile)
diff --git a/MediaBrowser.Providers/People/MovieDbPersonProvider.cs b/MediaBrowser.Providers/People/MovieDbPersonProvider.cs
index 986c4b4a98..d8c9ce8018 100644
--- a/MediaBrowser.Providers/People/MovieDbPersonProvider.cs
+++ b/MediaBrowser.Providers/People/MovieDbPersonProvider.cs
@@ -184,7 +184,7 @@ namespace MediaBrowser.Providers.People
 
                 if (!string.IsNullOrWhiteSpace(info.place_of_birth))
                 {
-                    item.ProductionLocations = new List<string> { info.place_of_birth };
+                    item.ProductionLocations = new string[] { info.place_of_birth };
                 }
                 item.Overview = info.biography;
 
diff --git a/MediaBrowser.Providers/People/PersonMetadataService.cs b/MediaBrowser.Providers/People/PersonMetadataService.cs
index 5d70fc1d60..bbfaa43b40 100644
--- a/MediaBrowser.Providers/People/PersonMetadataService.cs
+++ b/MediaBrowser.Providers/People/PersonMetadataService.cs
@@ -14,7 +14,7 @@ namespace MediaBrowser.Providers.People
 {
     public class PersonMetadataService : MetadataService<Person, PersonLookupInfo>
     {
-        protected override void MergeData(MetadataResult<Person> source, MetadataResult<Person> target, List<MetadataFields> lockedFields, bool replaceData, bool mergeMetadataSettings)
+        protected override void MergeData(MetadataResult<Person> source, MetadataResult<Person> target, MetadataFields[] lockedFields, bool replaceData, bool mergeMetadataSettings)
         {
             ProviderUtils.MergeBaseItemData(source, target, lockedFields, replaceData, mergeMetadataSettings);
         }
diff --git a/MediaBrowser.Providers/People/TvdbPersonImageProvider.cs b/MediaBrowser.Providers/People/TvdbPersonImageProvider.cs
index efbf46cd67..2c3ba00c82 100644
--- a/MediaBrowser.Providers/People/TvdbPersonImageProvider.cs
+++ b/MediaBrowser.Providers/People/TvdbPersonImageProvider.cs
@@ -48,12 +48,12 @@ namespace MediaBrowser.Providers.People
             get { return "TheTVDB"; }
         }
 
-        public bool Supports(IHasImages item)
+        public bool Supports(IHasMetadata item)
         {
             return item is Person;
         }
 
-        public IEnumerable<ImageType> GetSupportedImages(IHasImages item)
+        public IEnumerable<ImageType> GetSupportedImages(IHasMetadata item)
         {
             return new List<ImageType>
             {
@@ -61,7 +61,7 @@ namespace MediaBrowser.Providers.People
             };
         }
 
-        public Task<IEnumerable<RemoteImageInfo>> GetImages(IHasImages item, CancellationToken cancellationToken)
+        public Task<IEnumerable<RemoteImageInfo>> GetImages(IHasMetadata item, CancellationToken cancellationToken)
         {
             var seriesWithPerson = _libraryManager.GetItemList(new InternalItemsQuery
             {
diff --git a/MediaBrowser.Providers/Photos/PhotoAlbumMetadataService.cs b/MediaBrowser.Providers/Photos/PhotoAlbumMetadataService.cs
index 85b9dafd46..bff933ccfa 100644
--- a/MediaBrowser.Providers/Photos/PhotoAlbumMetadataService.cs
+++ b/MediaBrowser.Providers/Photos/PhotoAlbumMetadataService.cs
@@ -14,7 +14,7 @@ namespace MediaBrowser.Providers.Photos
 {
     class PhotoAlbumMetadataService : MetadataService<PhotoAlbum, ItemLookupInfo>
     {
-        protected override void MergeData(MetadataResult<PhotoAlbum> source, MetadataResult<PhotoAlbum> target, List<MetadataFields> lockedFields, bool replaceData, bool mergeMetadataSettings)
+        protected override void MergeData(MetadataResult<PhotoAlbum> source, MetadataResult<PhotoAlbum> target, MetadataFields[] lockedFields, bool replaceData, bool mergeMetadataSettings)
         {
             ProviderUtils.MergeBaseItemData(source, target, lockedFields, replaceData, mergeMetadataSettings);
         }
diff --git a/MediaBrowser.Providers/Photos/PhotoMetadataService.cs b/MediaBrowser.Providers/Photos/PhotoMetadataService.cs
index 909d359b99..d7f4982e4b 100644
--- a/MediaBrowser.Providers/Photos/PhotoMetadataService.cs
+++ b/MediaBrowser.Providers/Photos/PhotoMetadataService.cs
@@ -12,7 +12,7 @@ namespace MediaBrowser.Providers.Photos
 {
     class PhotoMetadataService : MetadataService<Photo, ItemLookupInfo>
     {
-        protected override void MergeData(MetadataResult<Photo> source, MetadataResult<Photo> target, List<MetadataFields> lockedFields, bool replaceData, bool mergeMetadataSettings)
+        protected override void MergeData(MetadataResult<Photo> source, MetadataResult<Photo> target, MetadataFields[] lockedFields, bool replaceData, bool mergeMetadataSettings)
         {
             ProviderUtils.MergeBaseItemData(source, target, lockedFields, replaceData, mergeMetadataSettings);
         }
diff --git a/MediaBrowser.Providers/Playlists/PlaylistMetadataService.cs b/MediaBrowser.Providers/Playlists/PlaylistMetadataService.cs
index c4ea106fb4..dccef3a09a 100644
--- a/MediaBrowser.Providers/Playlists/PlaylistMetadataService.cs
+++ b/MediaBrowser.Providers/Playlists/PlaylistMetadataService.cs
@@ -15,7 +15,7 @@ namespace MediaBrowser.Providers.Playlists
 {
     class PlaylistMetadataService : MetadataService<Playlist, ItemLookupInfo>
     {
-        protected override void MergeData(MetadataResult<Playlist> source, MetadataResult<Playlist> target, List<MetadataFields> lockedFields, bool replaceData, bool mergeMetadataSettings)
+        protected override void MergeData(MetadataResult<Playlist> source, MetadataResult<Playlist> target, MetadataFields[] lockedFields, bool replaceData, bool mergeMetadataSettings)
         {
             ProviderUtils.MergeBaseItemData(source, target, lockedFields, replaceData, mergeMetadataSettings);
 
diff --git a/MediaBrowser.Providers/Studios/StudioMetadataService.cs b/MediaBrowser.Providers/Studios/StudioMetadataService.cs
index ef5ced3e2b..23953b0d3e 100644
--- a/MediaBrowser.Providers/Studios/StudioMetadataService.cs
+++ b/MediaBrowser.Providers/Studios/StudioMetadataService.cs
@@ -12,7 +12,7 @@ namespace MediaBrowser.Providers.Studios
 {
     public class StudioMetadataService : MetadataService<Studio, ItemLookupInfo>
     {
-        protected override void MergeData(MetadataResult<Studio> source, MetadataResult<Studio> target, List<MetadataFields> lockedFields, bool replaceData, bool mergeMetadataSettings)
+        protected override void MergeData(MetadataResult<Studio> source, MetadataResult<Studio> target, MetadataFields[] lockedFields, bool replaceData, bool mergeMetadataSettings)
         {
             ProviderUtils.MergeBaseItemData(source, target, lockedFields, replaceData, mergeMetadataSettings);
         }
diff --git a/MediaBrowser.Providers/Studios/StudiosImageProvider.cs b/MediaBrowser.Providers/Studios/StudiosImageProvider.cs
index 8579bd16b9..f63615430f 100644
--- a/MediaBrowser.Providers/Studios/StudiosImageProvider.cs
+++ b/MediaBrowser.Providers/Studios/StudiosImageProvider.cs
@@ -37,12 +37,12 @@ namespace MediaBrowser.Providers.Studios
             get { return "Emby Designs"; }
         }
 
-        public bool Supports(IHasImages item)
+        public bool Supports(IHasMetadata item)
         {
             return item is Studio;
         }
 
-        public IEnumerable<ImageType> GetSupportedImages(IHasImages item)
+        public IEnumerable<ImageType> GetSupportedImages(IHasMetadata item)
         {
             return new List<ImageType>
             {
@@ -51,12 +51,12 @@ namespace MediaBrowser.Providers.Studios
             };
         }
 
-        public Task<IEnumerable<RemoteImageInfo>> GetImages(IHasImages item, CancellationToken cancellationToken)
+        public Task<IEnumerable<RemoteImageInfo>> GetImages(IHasMetadata item, CancellationToken cancellationToken)
         {
             return GetImages(item, true, true, cancellationToken);
         }
 
-        private async Task<IEnumerable<RemoteImageInfo>> GetImages(IHasImages item, bool posters, bool thumbs, CancellationToken cancellationToken)
+        private async Task<IEnumerable<RemoteImageInfo>> GetImages(IHasMetadata item, bool posters, bool thumbs, CancellationToken cancellationToken)
         {
             var list = new List<RemoteImageInfo>();
 
@@ -83,7 +83,7 @@ namespace MediaBrowser.Providers.Studios
             return list.Where(i => i != null);
         }
 
-        private RemoteImageInfo GetImage(IHasImages item, string filename, ImageType type, string remoteFilename)
+        private RemoteImageInfo GetImage(IHasMetadata item, string filename, ImageType type, string remoteFilename)
         {
             var list = ImageUtils.GetAvailableImages(filename, _fileSystem);
 
diff --git a/MediaBrowser.Providers/Subtitles/SubtitleManager.cs b/MediaBrowser.Providers/Subtitles/SubtitleManager.cs
index f7071f519e..fce95364ef 100644
--- a/MediaBrowser.Providers/Subtitles/SubtitleManager.cs
+++ b/MediaBrowser.Providers/Subtitles/SubtitleManager.cs
@@ -295,8 +295,7 @@ namespace MediaBrowser.Providers.Subtitles
             }
 
             var providers = _subtitleProviders
-                .Where(i => i.SupportedMediaTypes.Contains(mediaType))
-                .ToList();
+                .Where(i => i.SupportedMediaTypes.Contains(mediaType));
 
             return providers.Select(i => new SubtitleProviderInfo
             {
diff --git a/MediaBrowser.Providers/TV/EpisodeMetadataService.cs b/MediaBrowser.Providers/TV/EpisodeMetadataService.cs
index 8adb6d4d24..29533a46be 100644
--- a/MediaBrowser.Providers/TV/EpisodeMetadataService.cs
+++ b/MediaBrowser.Providers/TV/EpisodeMetadataService.cs
@@ -58,7 +58,7 @@ namespace MediaBrowser.Providers.TV
             return updateType;
         }
 
-        protected override void MergeData(MetadataResult<Episode> source, MetadataResult<Episode> target, List<MetadataFields> lockedFields, bool replaceData, bool mergeMetadataSettings)
+        protected override void MergeData(MetadataResult<Episode> source, MetadataResult<Episode> target, MetadataFields[] lockedFields, bool replaceData, bool mergeMetadataSettings)
         {
             ProviderUtils.MergeBaseItemData(source, target, lockedFields, replaceData, mergeMetadataSettings);
 
diff --git a/MediaBrowser.Providers/TV/FanArt/FanArtSeasonProvider.cs b/MediaBrowser.Providers/TV/FanArt/FanArtSeasonProvider.cs
index b9f010bb64..002c98e957 100644
--- a/MediaBrowser.Providers/TV/FanArt/FanArtSeasonProvider.cs
+++ b/MediaBrowser.Providers/TV/FanArt/FanArtSeasonProvider.cs
@@ -50,12 +50,12 @@ namespace MediaBrowser.Providers.TV
             get { return "FanArt"; }
         }
 
-        public bool Supports(IHasImages item)
+        public bool Supports(IHasMetadata item)
         {
             return item is Season;
         }
 
-        public IEnumerable<ImageType> GetSupportedImages(IHasImages item)
+        public IEnumerable<ImageType> GetSupportedImages(IHasMetadata item)
         {
             return new List<ImageType>
             {
@@ -66,7 +66,7 @@ namespace MediaBrowser.Providers.TV
             };
         }
 
-        public async Task<IEnumerable<RemoteImageInfo>> GetImages(IHasImages item, CancellationToken cancellationToken)
+        public async Task<IEnumerable<RemoteImageInfo>> GetImages(IHasMetadata item, CancellationToken cancellationToken)
         {
             var list = new List<RemoteImageInfo>();
 
diff --git a/MediaBrowser.Providers/TV/FanArt/FanartSeriesProvider.cs b/MediaBrowser.Providers/TV/FanArt/FanartSeriesProvider.cs
index 644e9cbb53..583e5900de 100644
--- a/MediaBrowser.Providers/TV/FanArt/FanartSeriesProvider.cs
+++ b/MediaBrowser.Providers/TV/FanArt/FanartSeriesProvider.cs
@@ -59,12 +59,12 @@ namespace MediaBrowser.Providers.TV
             get { return "FanArt"; }
         }
 
-        public bool Supports(IHasImages item)
+        public bool Supports(IHasMetadata item)
         {
             return item is Series;
         }
 
-        public IEnumerable<ImageType> GetSupportedImages(IHasImages item)
+        public IEnumerable<ImageType> GetSupportedImages(IHasMetadata item)
         {
             return new List<ImageType>
             {
@@ -77,7 +77,7 @@ namespace MediaBrowser.Providers.TV
             };
         }
 
-        public async Task<IEnumerable<RemoteImageInfo>> GetImages(IHasImages item, CancellationToken cancellationToken)
+        public async Task<IEnumerable<RemoteImageInfo>> GetImages(IHasMetadata item, CancellationToken cancellationToken)
         {
             var list = new List<RemoteImageInfo>();
 
diff --git a/MediaBrowser.Providers/TV/SeasonMetadataService.cs b/MediaBrowser.Providers/TV/SeasonMetadataService.cs
index 1b4e3f44fd..c10b0ef9db 100644
--- a/MediaBrowser.Providers/TV/SeasonMetadataService.cs
+++ b/MediaBrowser.Providers/TV/SeasonMetadataService.cs
@@ -61,7 +61,7 @@ namespace MediaBrowser.Providers.TV
             return updateType;
         }
 
-        protected override void MergeData(MetadataResult<Season> source, MetadataResult<Season> target, List<MetadataFields> lockedFields, bool replaceData, bool mergeMetadataSettings)
+        protected override void MergeData(MetadataResult<Season> source, MetadataResult<Season> target, MetadataFields[] lockedFields, bool replaceData, bool mergeMetadataSettings)
         {
             ProviderUtils.MergeBaseItemData(source, target, lockedFields, replaceData, mergeMetadataSettings);
         }
diff --git a/MediaBrowser.Providers/TV/SeriesMetadataService.cs b/MediaBrowser.Providers/TV/SeriesMetadataService.cs
index 7559a15de3..cfea0c3157 100644
--- a/MediaBrowser.Providers/TV/SeriesMetadataService.cs
+++ b/MediaBrowser.Providers/TV/SeriesMetadataService.cs
@@ -57,7 +57,7 @@ namespace MediaBrowser.Providers.TV
             return base.IsFullLocalMetadata(item);
         }
 
-        protected override void MergeData(MetadataResult<Series> source, MetadataResult<Series> target, List<MetadataFields> lockedFields, bool replaceData, bool mergeMetadataSettings)
+        protected override void MergeData(MetadataResult<Series> source, MetadataResult<Series> target, MetadataFields[] lockedFields, bool replaceData, bool mergeMetadataSettings)
         {
             ProviderUtils.MergeBaseItemData(source, target, lockedFields, replaceData, mergeMetadataSettings);
 
diff --git a/MediaBrowser.Providers/TV/TheMovieDb/MovieDbEpisodeImageProvider.cs b/MediaBrowser.Providers/TV/TheMovieDb/MovieDbEpisodeImageProvider.cs
index 854f9f06b8..728bbc505a 100644
--- a/MediaBrowser.Providers/TV/TheMovieDb/MovieDbEpisodeImageProvider.cs
+++ b/MediaBrowser.Providers/TV/TheMovieDb/MovieDbEpisodeImageProvider.cs
@@ -29,7 +29,7 @@ namespace MediaBrowser.Providers.TV
             : base(httpClient, configurationManager, jsonSerializer, fileSystem, localization, logManager)
         {}
 
-        public IEnumerable<ImageType> GetSupportedImages(IHasImages item)
+        public IEnumerable<ImageType> GetSupportedImages(IHasMetadata item)
         {
             return new List<ImageType>
             {
@@ -37,7 +37,7 @@ namespace MediaBrowser.Providers.TV
             };
         }
 
-        public async Task<IEnumerable<RemoteImageInfo>> GetImages(IHasImages item, CancellationToken cancellationToken)
+        public async Task<IEnumerable<RemoteImageInfo>> GetImages(IHasMetadata item, CancellationToken cancellationToken)
         {
             var episode = (Controller.Entities.TV.Episode)item;
             var series = episode.Series;
@@ -104,8 +104,7 @@ namespace MediaBrowser.Providers.TV
                 return 0;
             })
                 .ThenByDescending(i => i.CommunityRating ?? 0)
-                .ThenByDescending(i => i.VoteCount ?? 0)
-                .ToList();
+                .ThenByDescending(i => i.VoteCount ?? 0);
 
         }
 
@@ -125,7 +124,7 @@ namespace MediaBrowser.Providers.TV
             get { return "TheMovieDb"; }
         }
 
-        public bool Supports(IHasImages item)
+        public bool Supports(IHasMetadata item)
         {
             return item is Controller.Entities.TV.Episode;
         }
diff --git a/MediaBrowser.Providers/TV/TheMovieDb/MovieDbSeriesImageProvider.cs b/MediaBrowser.Providers/TV/TheMovieDb/MovieDbSeriesImageProvider.cs
index c746e04880..f05f7bb309 100644
--- a/MediaBrowser.Providers/TV/TheMovieDb/MovieDbSeriesImageProvider.cs
+++ b/MediaBrowser.Providers/TV/TheMovieDb/MovieDbSeriesImageProvider.cs
@@ -40,12 +40,12 @@ namespace MediaBrowser.Providers.TV
             get { return "TheMovieDb"; }
         }
 
-        public bool Supports(IHasImages item)
+        public bool Supports(IHasMetadata item)
         {
             return item is Series;
         }
 
-        public IEnumerable<ImageType> GetSupportedImages(IHasImages item)
+        public IEnumerable<ImageType> GetSupportedImages(IHasMetadata item)
         {
             return new List<ImageType>
             {
@@ -54,7 +54,7 @@ namespace MediaBrowser.Providers.TV
             };
         }
 
-        public async Task<IEnumerable<RemoteImageInfo>> GetImages(IHasImages item, CancellationToken cancellationToken)
+        public async Task<IEnumerable<RemoteImageInfo>> GetImages(IHasMetadata item, CancellationToken cancellationToken)
         {
             var list = new List<RemoteImageInfo>();
 
@@ -118,8 +118,7 @@ namespace MediaBrowser.Providers.TV
                 return 0;
             })
                 .ThenByDescending(i => i.CommunityRating ?? 0)
-                .ThenByDescending(i => i.VoteCount ?? 0)
-                .ToList();
+                .ThenByDescending(i => i.VoteCount ?? 0);
         }
 
         /// <summary>
@@ -138,8 +137,7 @@ namespace MediaBrowser.Providers.TV
         private IEnumerable<MovieDbSeriesProvider.Backdrop> GetBackdrops(MovieDbSeriesProvider.Images images)
         {
             var eligibleBackdrops = images.backdrops == null ? new List<MovieDbSeriesProvider.Backdrop>() :
-                images.backdrops
-                .ToList();
+                images.backdrops;
 
             return eligibleBackdrops.OrderByDescending(i => i.vote_average)
                 .ThenByDescending(i => i.vote_count);
diff --git a/MediaBrowser.Providers/TV/TheMovieDb/MovieDbSeriesProvider.cs b/MediaBrowser.Providers/TV/TheMovieDb/MovieDbSeriesProvider.cs
index 0b5708b568..4de1712d20 100644
--- a/MediaBrowser.Providers/TV/TheMovieDb/MovieDbSeriesProvider.cs
+++ b/MediaBrowser.Providers/TV/TheMovieDb/MovieDbSeriesProvider.cs
@@ -21,6 +21,7 @@ using System.Threading.Tasks;
 using MediaBrowser.Controller.IO;
 using MediaBrowser.Model.IO;
 using MediaBrowser.Model.Globalization;
+using MediaBrowser.Model.Extensions;
 
 namespace MediaBrowser.Providers.TV
 {
@@ -231,7 +232,7 @@ namespace MediaBrowser.Providers.TV
 
             if (seriesInfo.networks != null)
             {
-                series.Studios = seriesInfo.networks.Select(i => i.name).ToList();
+                series.Studios = seriesInfo.networks.Select(i => i.name).ToArray(seriesInfo.networks.Count);
             }
 
             if (seriesInfo.genres != null)
diff --git a/MediaBrowser.Providers/TV/TheTVDB/TvdbEpisodeImageProvider.cs b/MediaBrowser.Providers/TV/TheTVDB/TvdbEpisodeImageProvider.cs
index 48e50c2e14..7b6bcc4c7c 100644
--- a/MediaBrowser.Providers/TV/TheTVDB/TvdbEpisodeImageProvider.cs
+++ b/MediaBrowser.Providers/TV/TheTVDB/TvdbEpisodeImageProvider.cs
@@ -35,12 +35,12 @@ namespace MediaBrowser.Providers.TV
             get { return "TheTVDB"; }
         }
 
-        public bool Supports(IHasImages item)
+        public bool Supports(IHasMetadata item)
         {
             return item is Episode;
         }
 
-        public IEnumerable<ImageType> GetSupportedImages(IHasImages item)
+        public IEnumerable<ImageType> GetSupportedImages(IHasMetadata item)
         {
             return new List<ImageType>
             {
@@ -48,7 +48,7 @@ namespace MediaBrowser.Providers.TV
             };
         }
 
-        public Task<IEnumerable<RemoteImageInfo>> GetImages(IHasImages item, CancellationToken cancellationToken)
+        public Task<IEnumerable<RemoteImageInfo>> GetImages(IHasMetadata item, CancellationToken cancellationToken)
         {
             var episode = (Episode)item;
             var series = episode.Series;
diff --git a/MediaBrowser.Providers/TV/TheTVDB/TvdbPrescanTask.cs b/MediaBrowser.Providers/TV/TheTVDB/TvdbPrescanTask.cs
index 9a457ba948..30d2691e3b 100644
--- a/MediaBrowser.Providers/TV/TheTVDB/TvdbPrescanTask.cs
+++ b/MediaBrowser.Providers/TV/TheTVDB/TvdbPrescanTask.cs
@@ -320,9 +320,8 @@ namespace MediaBrowser.Providers.TV
         /// <param name="progress">The progress.</param>
         /// <param name="cancellationToken">The cancellation token.</param>
         /// <returns>Task.</returns>
-        private async Task UpdateSeries(IEnumerable<string> seriesIds, string seriesDataPath, long? lastTvDbUpdateTime, IProgress<double> progress, CancellationToken cancellationToken)
+        private async Task UpdateSeries(List<string> seriesIds, string seriesDataPath, long? lastTvDbUpdateTime, IProgress<double> progress, CancellationToken cancellationToken)
         {
-            var list = seriesIds.ToList();
             var numComplete = 0;
 
             var seriesList = _libraryManager.GetItemList(new InternalItemsQuery()
@@ -342,7 +341,7 @@ namespace MediaBrowser.Providers.TV
                 .Where(i => !string.IsNullOrEmpty(i.GetProviderId(MetadataProviders.Tvdb)))
                 .ToLookup(i => i.GetProviderId(MetadataProviders.Tvdb));
 
-            foreach (var seriesId in list)
+            foreach (var seriesId in seriesIds)
             {
                 // Find the preferred language(s) for the movie in the library
                 var languages = allSeries[seriesId]
@@ -371,7 +370,7 @@ namespace MediaBrowser.Providers.TV
 
                 numComplete++;
                 double percent = numComplete;
-                percent /= list.Count;
+                percent /= seriesIds.Count;
                 percent *= 100;
 
                 progress.Report(percent);
diff --git a/MediaBrowser.Providers/TV/TheTVDB/TvdbSeasonImageProvider.cs b/MediaBrowser.Providers/TV/TheTVDB/TvdbSeasonImageProvider.cs
index 395d419cfc..22dab1cd7c 100644
--- a/MediaBrowser.Providers/TV/TheTVDB/TvdbSeasonImageProvider.cs
+++ b/MediaBrowser.Providers/TV/TheTVDB/TvdbSeasonImageProvider.cs
@@ -48,12 +48,12 @@ namespace MediaBrowser.Providers.TV
             get { return "TheTVDB"; }
         }
 
-        public bool Supports(IHasImages item)
+        public bool Supports(IHasMetadata item)
         {
             return item is Season;
         }
 
-        public IEnumerable<ImageType> GetSupportedImages(IHasImages item)
+        public IEnumerable<ImageType> GetSupportedImages(IHasMetadata item)
         {
             return new List<ImageType>
             {
@@ -63,7 +63,7 @@ namespace MediaBrowser.Providers.TV
             };
         }
 
-        public async Task<IEnumerable<RemoteImageInfo>> GetImages(IHasImages item, CancellationToken cancellationToken)
+        public async Task<IEnumerable<RemoteImageInfo>> GetImages(IHasMetadata item, CancellationToken cancellationToken)
         {
             var season = (Season)item;
             var series = season.Series;
@@ -175,8 +175,7 @@ namespace MediaBrowser.Providers.TV
                     return 0;
                 })
                 .ThenByDescending(i => i.CommunityRating ?? 0)
-                .ThenByDescending(i => i.VoteCount ?? 0)
-                .ToList();
+                .ThenByDescending(i => i.VoteCount ?? 0);
         }
 
         private static void AddImage(XmlReader reader, List<RemoteImageInfo> images, int seasonNumber)
diff --git a/MediaBrowser.Providers/TV/TheTVDB/TvdbSeriesImageProvider.cs b/MediaBrowser.Providers/TV/TheTVDB/TvdbSeriesImageProvider.cs
index d7eea42267..6f3d763e24 100644
--- a/MediaBrowser.Providers/TV/TheTVDB/TvdbSeriesImageProvider.cs
+++ b/MediaBrowser.Providers/TV/TheTVDB/TvdbSeriesImageProvider.cs
@@ -49,12 +49,12 @@ namespace MediaBrowser.Providers.TV
             get { return "TheTVDB"; }
         }
 
-        public bool Supports(IHasImages item)
+        public bool Supports(IHasMetadata item)
         {
             return item is Series;
         }
 
-        public IEnumerable<ImageType> GetSupportedImages(IHasImages item)
+        public IEnumerable<ImageType> GetSupportedImages(IHasMetadata item)
         {
             return new List<ImageType>
             {
@@ -64,7 +64,7 @@ namespace MediaBrowser.Providers.TV
             };
         }
 
-        public async Task<IEnumerable<RemoteImageInfo>> GetImages(IHasImages item, CancellationToken cancellationToken)
+        public async Task<IEnumerable<RemoteImageInfo>> GetImages(IHasMetadata item, CancellationToken cancellationToken)
         {
             if (TvdbSeriesProvider.IsValidSeries(item.ProviderIds))
             {
@@ -169,8 +169,7 @@ namespace MediaBrowser.Providers.TV
                 return 0;
             })
                 .ThenByDescending(i => i.CommunityRating ?? 0)
-                .ThenByDescending(i => i.VoteCount ?? 0)
-                .ToList();
+                .ThenByDescending(i => i.VoteCount ?? 0);
         }
 
         private void AddImage(XmlReader reader, List<RemoteImageInfo> images)
diff --git a/MediaBrowser.Providers/TV/TheTVDB/TvdbSeriesProvider.cs b/MediaBrowser.Providers/TV/TheTVDB/TvdbSeriesProvider.cs
index 8a10affb90..78556c5a45 100644
--- a/MediaBrowser.Providers/TV/TheTVDB/TvdbSeriesProvider.cs
+++ b/MediaBrowser.Providers/TV/TheTVDB/TvdbSeriesProvider.cs
@@ -482,7 +482,7 @@ namespace MediaBrowser.Providers.TV
         /// <returns>Task{System.String}.</returns>
         private async Task<IEnumerable<RemoteSearchResult>> FindSeries(string name, int? year, string language, CancellationToken cancellationToken)
         {
-            var results = (await FindSeriesInternal(name, language, cancellationToken).ConfigureAwait(false)).ToList();
+            var results = (await FindSeriesInternal(name, language, cancellationToken).ConfigureAwait(false));
 
             if (results.Count == 0)
             {
@@ -491,7 +491,7 @@ namespace MediaBrowser.Providers.TV
 
                 if (!string.IsNullOrWhiteSpace(nameWithoutYear) && !string.Equals(nameWithoutYear, name, StringComparison.OrdinalIgnoreCase))
                 {
-                    results = (await FindSeriesInternal(nameWithoutYear, language, cancellationToken).ConfigureAwait(false)).ToList();
+                    results = (await FindSeriesInternal(nameWithoutYear, language, cancellationToken).ConfigureAwait(false));
                 }
             }
 
@@ -507,7 +507,7 @@ namespace MediaBrowser.Providers.TV
             });
         }
 
-        private async Task<IEnumerable<RemoteSearchResult>> FindSeriesInternal(string name, string language, CancellationToken cancellationToken)
+        private async Task<List<RemoteSearchResult>> FindSeriesInternal(string name, string language, CancellationToken cancellationToken)
         {
             var url = string.Format(SeriesSearchUrl, WebUtility.UrlEncode(name), NormalizeLanguage(language));
             var searchResults = new List<RemoteSearchResult>();
@@ -1273,12 +1273,7 @@ namespace MediaBrowser.Providers.TV
 
                                     if (vals.Count > 0)
                                     {
-                                        item.Studios.Clear();
-
-                                        foreach (var genre in vals)
-                                        {
-                                            item.AddStudio(genre);
-                                        }
+                                        item.SetStudios(vals);
                                     }
                                 }
 
diff --git a/MediaBrowser.Providers/Users/UserMetadataService.cs b/MediaBrowser.Providers/Users/UserMetadataService.cs
index 88df704d6b..694315c180 100644
--- a/MediaBrowser.Providers/Users/UserMetadataService.cs
+++ b/MediaBrowser.Providers/Users/UserMetadataService.cs
@@ -14,7 +14,7 @@ namespace MediaBrowser.Providers.Users
 {
     public class UserMetadataService : MetadataService<User, ItemLookupInfo>
     {
-        protected override void MergeData(MetadataResult<User> source, MetadataResult<User> target, List<MetadataFields> lockedFields, bool replaceData, bool mergeMetadataSettings)
+        protected override void MergeData(MetadataResult<User> source, MetadataResult<User> target, MetadataFields[] lockedFields, bool replaceData, bool mergeMetadataSettings)
         {
             ProviderUtils.MergeBaseItemData(source, target, lockedFields, replaceData, mergeMetadataSettings);
         }
diff --git a/MediaBrowser.Providers/Videos/VideoMetadataService.cs b/MediaBrowser.Providers/Videos/VideoMetadataService.cs
index a07cc5949a..f493eb31f9 100644
--- a/MediaBrowser.Providers/Videos/VideoMetadataService.cs
+++ b/MediaBrowser.Providers/Videos/VideoMetadataService.cs
@@ -21,7 +21,7 @@ namespace MediaBrowser.Providers.Videos
             }
         }
 
-        protected override void MergeData(MetadataResult<Video> source, MetadataResult<Video> target, List<MetadataFields> lockedFields, bool replaceData, bool mergeMetadataSettings)
+        protected override void MergeData(MetadataResult<Video> source, MetadataResult<Video> target, MetadataFields[] lockedFields, bool replaceData, bool mergeMetadataSettings)
         {
             ProviderUtils.MergeBaseItemData(source, target, lockedFields, replaceData, mergeMetadataSettings);
         }
diff --git a/MediaBrowser.Providers/Years/YearMetadataService.cs b/MediaBrowser.Providers/Years/YearMetadataService.cs
index 36c2fd1dd1..7838336562 100644
--- a/MediaBrowser.Providers/Years/YearMetadataService.cs
+++ b/MediaBrowser.Providers/Years/YearMetadataService.cs
@@ -14,7 +14,7 @@ namespace MediaBrowser.Providers.Years
 {
     public class YearMetadataService : MetadataService<Year, ItemLookupInfo>
     {
-        protected override void MergeData(MetadataResult<Year> source, MetadataResult<Year> target, List<MetadataFields> lockedFields, bool replaceData, bool mergeMetadataSettings)
+        protected override void MergeData(MetadataResult<Year> source, MetadataResult<Year> target, MetadataFields[] lockedFields, bool replaceData, bool mergeMetadataSettings)
         {
             ProviderUtils.MergeBaseItemData(source, target, lockedFields, replaceData, mergeMetadataSettings);
         }