code: def get_media_uri(self, item_id):
          
          response = self.soap_client.call(
              'getMediaURI',
              [('id', item_id)])
          return response.get('getMediaURIResult', None)
docs: Get a streaming URI for an item.
  
          Note:
             You should not need to use this directly. It is used by the Sonos
             players (not the controllers) to obtain the uri of the media
             stream. If you want to have a player play a media item,
             you should add add it to the queue using its id and let the
             player work out where to get the stream from (see `On Demand
             Playback <http://musicpartners.sonos.com/node/421>`_ and
             `Programmed Radio <http://musicpartners.sonos.com/node/422>`_)
  
          Args:
              item_id (str): The item for which the URI is required
  
          Returns:
              str: The item's streaming URI.