<!DOCTYPE HTML>
<html>
<body>
<audio id="a" src="http://www.vorbis.com/music/Epoq-Lepidoptera.ogg"></audio>
<script>
function runTest() {
var other = window.open("about:blank");
var a = document.getElementById('a');
other.document.documentElement.appendChild(a);
a.play();
}
</script>
<button onclick="document.getElementById('a').play()">Start playing</button>
<button onclick="runTest()">Move to new window</button>
</body>
</html>