Remote playback almost working

Aurora/Services/LibraryService.cs

@@ -37,6 +37,12 @@ namespace Aurora.Services
             return collection;
         }
 
+        public BaseMedia GetSong(string Id)
+        {
+            _library.TryGetValue(Id, out BaseMedia song);
+            return song;
+        }
+
         /// <summary>
         /// Loads library from files.
         /// </summary>