Fixed issues with the TrackList interface

libremsonic/app.py

@@ -293,7 +293,7 @@ class LibremsonicApp(Gtk.Application):
                         for k, v in metadata.items()
                     })
 
-            return GLib.Variant('aa{sv}', metadatas)
+            return GLib.Variant('(aa{sv})', (metadatas,))
 
         method_call_map = {
             'org.mpris.MediaPlayer2': {

libremsonic/dbus_manager.py

@@ -210,7 +210,7 @@ class DBusManager:
                 True,
             },
             'org.mpris.MediaPlayer2.TrackList': {
-                'Tracks': state.play_queue,
+                'Tracks': ['/' + i for i in state.play_queue],
                 'CanEditTracks': False,
             },
         }