Ack!
Code:
gareth@gareth-laptop:~/exaile$ ./exaile
Introspect error: The name org.exaile.DBusInterface was not provided by any .service files
***** You can safely ignore the above error.
Error reading settings file, using defaults.
Traceback (most recent call last):
  File "exaile.py", line 1877, in ?
    if __name__ == "__main__": main()
  File "exaile.py", line 1868, in main
    exaile = ExaileWindow(fr)
  File "exaile.py", line 111, in __init__
    media.set_audio_sink(self.settings.get('audio_sink', 'esdsink'))
  File "/home/gareth/exaile/xl/media.py", line 50, in set_audio_sink
    player.set_property("audio-sink", audio_sink)
AttributeError: 'NoneType' object has no attribute 'set_property'