fixed failing scan

MediaBrowser.Controller/Entities/Audio/Audio.cs

@@ -21,7 +21,7 @@ namespace MediaBrowser.Controller.Entities.Audio
         /// </summary>
         /// <value><c>true</c> if this instance has embedded image; otherwise, <c>false</c>.</value>
         public bool HasEmbeddedImage { get; set; }
-        
+
         /// <summary>
         /// Override this to true if class should be grouped under a container in indicies
         /// The container class should be defined via IndexContainer
@@ -36,10 +36,6 @@ namespace MediaBrowser.Controller.Entities.Audio
             }
         }
 
-        /// <summary>
-        /// The unknown album
-        /// </summary>
-        private static readonly MusicAlbum UnknownAlbum = new MusicAlbum { Name = "<Unknown>" };
         /// <summary>
         /// Override this to return the folder that should be used to construct a container
         /// for this item in an index.  GroupInIndex should be true as well.
@@ -50,7 +46,7 @@ namespace MediaBrowser.Controller.Entities.Audio
         {
             get
             {
-                return Parent is MusicAlbum ? Parent : Album != null ? new MusicAlbum { Name = Album, PrimaryImagePath = PrimaryImagePath } : UnknownAlbum;
+                return Parents.OfType<MusicAlbum>().FirstOrDefault() ?? new MusicAlbum { Name = "<Unknown>" };
             }
         }
 

MediaBrowser.Controller/Entities/IHasImages.cs

@@ -81,7 +81,7 @@ namespace MediaBrowser.Controller.Entities
         /// Gets or sets the primary image path.
         /// </summary>
         /// <value>The primary image path.</value>
-        string PrimaryImagePath { get; set; }
+        string PrimaryImagePath { get; }
 
         /// <summary>
         /// Gets the preferred metadata language.

MediaBrowser.Controller/LiveTv/ILiveTvRecording.cs

@@ -1,6 +1,5 @@
 using MediaBrowser.Controller.Entities;
 using MediaBrowser.Controller.Providers;
-using MediaBrowser.Model.Entities;
 using System.Threading;
 using System.Threading.Tasks;