code: func NewDriver(a *Adaptor, filename string) *Driver {
  	return &Driver{
  		name:       gobot.DefaultName("Audio"),
  		connection: a,
  		interval:   500 * time.Millisecond,
  		filename:   filename,
  		halt:       make(chan bool, 0),
  		Eventer:    gobot.NewEventer(),
  		Commander:  gobot.NewCommander(),
  	}
  }
docs: // NewDriver returns a new audio Driver. It accepts:
  //
  // *Adaptor: The audio adaptor to use for the driver
  //  string: The filename of the audio to start playing
  //