code: def get_media_metadata(self, item_id):
          
          response = self.soap_client.call(
              'getMediaMetadata',
              [('id', item_id)])
          return response.get('getMediaMetadataResult', None)
docs: Get metadata for a media item.
  
          Args:
              item_id (str): The item for which metadata is required.
  
          Returns:
              ~collections.OrderedDict: The item's metadata, or `None`
  
          See also:
              The Sonos `getMediaMetadata API
              <http://musicpartners.sonos.com/node/83>`_