code: function (host, port) {
    this.name = 'AVTransport'
    this.host = host
    this.port = port || 1400
    this.controlURL = '/MediaRenderer/AVTransport/Control'
    this.eventSubURL = '/MediaRenderer/AVTransport/Event'
    this.SCPDURL = '/xml/AVTransport1.xml'
  }
docs: Create a new instance of AVTransport
  @class AVTransport
  @param {String} host The host param of one of your sonos speakers
  @param {Number} port The port of your sonos speaker, defaults to 1400