AudioWrapper.js

function AudioWrapper(src){//Simple audio wrapper
  var audio = new Audio(), self = this;//create the audio element
  audio.src = src;//set the source...
  ['play','stop','pause'].forEach(function(item){//play stop and pause hookup
    var actualCommand = item === 'stop'?'pause':item;//when stopping, use pause instead
    self[item] = function(){//set the function...
      audio[actualCommand]();//call the pause or play function
      if(item === 'stop')//and if stop is called...
        self.currentTime(0);//go back to the start
    };
  });
  this.currentTime = function(time){//small convenience function
    return audio.currentTime=time||src.currentTime;//sets the current time or returns it
  };
  this.canPlay = function(){//just checks to see if the readyState is 4
    return audio.readyState === 4;//ready state!
  };
  this.onReady = function(func){//Any function hooked here will be called 100% of the time
    var args = [].slice.call(arguments, 1);//unless it isn't loaded
    function checkReady(){//named function
      if(self.canPlay())//check to see if it can be played
        func.apply(self, args);//call the function...
      else
        setTimeout(checkReady,100);//check in a few seconds.
    }
    checkReady();//start up!
  };
}

var x = new AudioWrapper(src);//create the Audio
x.onReady(function(playLength){//hook up a function...
  x.play();
  setTimeout(x.stop, playLength);
},10000);