def __init__(self, protocol):
self.protocol = protocol<EOL>self.protocol.add_listener(<EOL>self._handle_set_state, protobuf.SET_STATE_MESSAGE)<EOL>self.protocol.add_listener(<EOL>self._handle_transaction, protobuf.TRANSACTION_MESSAGE)<EOL>self._setstate = None<EOL>self._nowplaying = None<EOL>
Initialize a new MrpPlaying.