code: def get_current_transport_info(self):
          
          response = self.avTransport.GetTransportInfo([
              ('InstanceID', 0),
          ])
  
          playstate = {
              'current_transport_status': '',
              'current_transport_state': '',
              'current_transport_speed': ''
          }
  
          playstate['current_transport_state'] = \
              response['CurrentTransportState']
          playstate['current_transport_status'] = \
              response['CurrentTransportStatus']
          playstate['current_transport_speed'] = response['CurrentSpeed']
  
          return playstate
docs: Get the current playback state.
  
          Returns:
              dict: The following information about the
              speaker's playing state:
  
              *   current_transport_state (``PLAYING``, ``TRANSITIONING``,
                  ``PAUSED_PLAYBACK``, ``STOPPED``)
              *   current_transport_status (OK, ?)
              *   current_speed(1, ?)
  
          This allows us to know if speaker is playing or not. Don't know other
          states of CurrentTransportStatus and CurrentSpeed.