7 files changed, 44 insertions, 15 deletions
diff --git a/MediaBrowser.Controller/Entities/BaseItem.cs b/MediaBrowser.Controller/Entities/BaseItem.cs
index be88c535e..90a22b217 100644
--- a/MediaBrowser.Controller/Entities/BaseItem.cs
+++ b/MediaBrowser.Controller/Entities/BaseItem.cs
@@ -116,6 +116,22 @@ namespace MediaBrowser.Controller.Entities
         public bool IsInMixedFolder { get; set; }
 
         [IgnoreDataMember]
+        protected virtual bool SupportsIsInMixedFolderDetection
+        {
+            get { return false; }
+        }
+
+        public bool DetectIsInMixedFolder()
+        {
+            if (SupportsIsInMixedFolderDetection)
+            {
+                    
+            }
+
+            return IsInMixedFolder;
+        }
+
+        [IgnoreDataMember]
         public virtual bool SupportsRemoteImageDownloading
         {
             get
@@ -1116,7 +1132,7 @@ namespace MediaBrowser.Controller.Entities
                 var hasThemeMedia = this as IHasThemeMedia;
                 if (hasThemeMedia != null)
                 {
-                    if (!IsInMixedFolder)
+                    if (!DetectIsInMixedFolder())
                     {
                         themeSongsChanged = await RefreshThemeSongs(hasThemeMedia, options, fileSystemChildren, cancellationToken).ConfigureAwait(false);
 
@@ -1266,7 +1282,15 @@ namespace MediaBrowser.Controller.Entities
         {
             var current = this;
 
-            return current.IsInMixedFolder == newItem.IsInMixedFolder;
+            if (!SupportsIsInMixedFolderDetection)
+            {
+                if (current.IsInMixedFolder != newItem.IsInMixedFolder)
+                {
+                    return false;
+                }
+            }
+
+            return true;
         }
 
         public void AfterMetadataRefresh()
diff --git a/MediaBrowser.Controller/Entities/Game.cs b/MediaBrowser.Controller/Entities/Game.cs
index 24910498f..a48b9f564 100644
--- a/MediaBrowser.Controller/Entities/Game.cs
+++ b/MediaBrowser.Controller/Entities/Game.cs
@@ -98,7 +98,7 @@ namespace MediaBrowser.Controller.Entities
 
         public override IEnumerable<string> GetDeletePaths()
         {
-            if (!IsInMixedFolder)
+            if (!DetectIsInMixedFolder())
             {
                 return new[] { System.IO.Path.GetDirectoryName(Path) };
             }
diff --git a/MediaBrowser.Controller/Entities/IHasImages.cs b/MediaBrowser.Controller/Entities/IHasImages.cs
index a38b7394d..1ab0566e0 100644
--- a/MediaBrowser.Controller/Entities/IHasImages.cs
+++ b/MediaBrowser.Controller/Entities/IHasImages.cs
@@ -150,11 +150,7 @@ namespace MediaBrowser.Controller.Entities
         /// <value><c>true</c> if [supports local metadata]; otherwise, <c>false</c>.</value>
         bool SupportsLocalMetadata { get; }
 
-        /// <summary>
-        /// Gets a value indicating whether this instance is in mixed folder.
-        /// </summary>
-        /// <value><c>true</c> if this instance is in mixed folder; otherwise, <c>false</c>.</value>
-        bool IsInMixedFolder { get; }
+        bool DetectIsInMixedFolder();
 
         /// <summary>
         /// Gets a value indicating whether this instance is locked.
diff --git a/MediaBrowser.Controller/Entities/Movies/Movie.cs b/MediaBrowser.Controller/Entities/Movies/Movie.cs
index f0270497c..e1e336147 100644
--- a/MediaBrowser.Controller/Entities/Movies/Movie.cs
+++ b/MediaBrowser.Controller/Entities/Movies/Movie.cs
@@ -81,7 +81,7 @@ namespace MediaBrowser.Controller.Entities.Movies
 
             // Must have a parent to have special features
             // In other words, it must be part of the Parent/Child tree
-            if (LocationType == LocationType.FileSystem && GetParent() != null && !IsInMixedFolder)
+            if (LocationType == LocationType.FileSystem && GetParent() != null && !DetectIsInMixedFolder())
             {
                 var specialFeaturesChanged = await RefreshSpecialFeatures(options, fileSystemChildren, cancellationToken).ConfigureAwait(false);
 
@@ -119,7 +119,7 @@ namespace MediaBrowser.Controller.Entities.Movies
         {
             var info = GetItemLookupInfo<MovieInfo>();
 
-            if (!IsInMixedFolder)
+            if (!DetectIsInMixedFolder())
             {
                 info.Name = System.IO.Path.GetFileName(ContainingFolderPath);
             }
@@ -145,7 +145,7 @@ namespace MediaBrowser.Controller.Entities.Movies
                 else
                 {
                     // Try to get the year from the folder name
-                    if (!IsInMixedFolder)
+                    if (!DetectIsInMixedFolder())
                     {
                         info = LibraryManager.ParseName(System.IO.Path.GetFileName(ContainingFolderPath));
 
diff --git a/MediaBrowser.Controller/Entities/MusicVideo.cs b/MediaBrowser.Controller/Entities/MusicVideo.cs
index 8b749b7a5..9254802dd 100644
--- a/MediaBrowser.Controller/Entities/MusicVideo.cs
+++ b/MediaBrowser.Controller/Entities/MusicVideo.cs
@@ -37,6 +37,15 @@ namespace MediaBrowser.Controller.Entities
             }
         }
 
+        [IgnoreDataMember]
+        protected override bool SupportsIsInMixedFolderDetection
+        {
+            get
+            {
+                return true;
+            }
+        }
+
         public override UnratedItem GetBlockUnratedType()
         {
             return UnratedItem.Music;
@@ -65,7 +74,7 @@ namespace MediaBrowser.Controller.Entities
                 else
                 {
                     // Try to get the year from the folder name
-                    if (!IsInMixedFolder)
+                    if (!DetectIsInMixedFolder())
                     {
                         info = LibraryManager.ParseName(System.IO.Path.GetFileName(ContainingFolderPath));
 
diff --git a/MediaBrowser.Controller/Entities/Trailer.cs b/MediaBrowser.Controller/Entities/Trailer.cs
index 7a987a68e..f68cd2c85 100644
--- a/MediaBrowser.Controller/Entities/Trailer.cs
+++ b/MediaBrowser.Controller/Entities/Trailer.cs
@@ -64,7 +64,7 @@ namespace MediaBrowser.Controller.Entities
 
             info.IsLocalTrailer = TrailerTypes.Contains(TrailerType.LocalTrailer);
 
-            if (!IsInMixedFolder && LocationType == LocationType.FileSystem)
+            if (!DetectIsInMixedFolder() && LocationType == LocationType.FileSystem)
             {
                 info.Name = System.IO.Path.GetFileName(ContainingFolderPath);
             }
@@ -90,7 +90,7 @@ namespace MediaBrowser.Controller.Entities
                 else
                 {
                     // Try to get the year from the folder name
-                    if (!IsInMixedFolder)
+                    if (!DetectIsInMixedFolder())
                     {
                         info = LibraryManager.ParseName(System.IO.Path.GetFileName(ContainingFolderPath));
 
diff --git a/MediaBrowser.Controller/Entities/Video.cs b/MediaBrowser.Controller/Entities/Video.cs
index 1406a05ce..c64cdf57d 100644
--- a/MediaBrowser.Controller/Entities/Video.cs
+++ b/MediaBrowser.Controller/Entities/Video.cs
@@ -480,7 +480,7 @@ namespace MediaBrowser.Controller.Entities
 
         public override IEnumerable<string> GetDeletePaths()
         {
-            if (!IsInMixedFolder)
+            if (!DetectIsInMixedFolder())
             {
                 return new[] { ContainingFolderPath };
             }