prevent traceback when enabling Tune. Fixes #5277
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		|  | @ -3004,8 +3004,8 @@ class Interface: | |||
| 			pass | ||||
| 
 | ||||
| 	def enable_music_listener(self): | ||||
| 		if not self.music_track_changed_signal: | ||||
| 		listener = MusicTrackListener.get() | ||||
| 		if not self.music_track_changed_signal: | ||||
| 			self.music_track_changed_signal = listener.connect( | ||||
| 				'music-track-changed', self.music_track_changed) | ||||
| 		track = listener.get_playing_track() | ||||
|  |  | |||
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