html5 audio

gistfile1.html

<script>
	var a = new Audio();
	var sources = [
		'topsecret1.wav',
		'topsecret2.wav',
		'topsecret3.wav'];

	function playSound() {
		var i = Math.floor(Math.random()*3);
		a.pause();
		a.src = sources[i];
		a.startTime = 0;
		a.play();
	}
</script>