code: function () {
      var i;
      var sound;
      this.isPlaying = false;
      for (i = 0; i < this.pool.children.length; i++) {
        sound = this.pool.children[i];
        if (!sound.source || !sound.source.buffer) { return; }
        sound.stop();
      }
    }
docs: Stop all the sounds in the pool.