'Swith to provided track.
*MAY be reimplemented by subclass.*
It is unlikely it makes sense for any backends to override
this. For most practical purposes it should be considered an internal
call between backends and core that backend authors should not touch.
The default implementation will call :meth:`translate_uri` which
is what you want to implement.
:param track: the track to play
:type track: :class:`mopidy.models.Track`
:rtype: :class:`True` if successful, else :class:`False`'

def change_track(self, track):

    uri = self.translate_uri(track.uri)
    if (uri != track.uri):
        logger.debug(u'Backend    translated    URI    from    %s    to    %s', track.uri, uri)
    if (not uri):
        return False
    self.audio.set_uri(uri).get()
    return True
