code: function(mute) {
  			if (!Crafty.support.audio)
  				return;
  			var s;
  			for (var i in this.sounds) {
  				s = this.sounds[i];
  				s.obj.volume = mute ? 0 : s.volume;
  			}
  			this.muted = mute;
  		}
docs: #Crafty.audio._mute
  @sign public this Crafty.audio._mute([Boolean mute])
  
  Mute or unmute every Audio instance that is playing.