Fix playstate updates due to PMS websocket change

- Fixes #162

resources/lib/librarysync.py

@@ -1392,9 +1392,9 @@ class LibrarySync(Thread):
         """
         typus = message.get('type')
         if typus == 'playing':
-            self.process_playing(message['_children'])
+            self.process_playing(message['PlaySessionStateNotification'])
         elif typus == 'timeline':
-            self.process_timeline(message['_children'])
+            self.process_timeline(message['TimelineEntry'])
 
     def multi_delete(self, liste, deleteListe):
         """

resources/lib/websocket_client.py

@@ -41,11 +41,15 @@ class WebSocket(threading.Thread):
             log.error('Error decoding message from websocket: %s' % ex)
             log.error(message)
             return False
-
+        try:
+            message = message['NotificationContainer']
+        except KeyError:
+            log.error('Could not parse PMS message: %s' % message)
+            return False
         # Triage
         typus = message.get('type')
         if typus is None:
-            log.debug('No message type, dropping message: %s' % message)
+            log.error('No message type, dropping message: %s' % message)
             return False
         log.debug('Received message from PMS server: %s' % message)
         # Drop everything we're not interested in