https://github.com/mopidy/mopidy-spotify/issues/116 hacky workaround

actor.py

# In mopidy/mpd/actor.py

class MpdFrontend(pykka.ThreadingActor, CoreListener):

    def __init__(self, config, core):
        super(MpdFrontend, self).__init__()

        self.hostname = network.format_hostname(config['mpd']['hostname'])
        self.port = config['mpd']['port']
        self.uri_map = uri_mapper.MpdUriMapper(core)

        self.zeroconf_name = config['mpd']['zeroconf']
        self.zeroconf_service = None

        # Horrible hack here:
        core.library
        core.history
        core.mixer
        core.playback
        core.playlists
        core.tracklist