wad does not work in ios 9

[devism]

The following code does not work in ios 9. touchend, mousedown, etc also fail.

document.getElementById('loop1').addEventListener("click", playSample);

function playSample(){
    var bell = new Wad({source : '/webaudio/audio/hot_pants.wav'});
bell.play();

   setTimeout(function(){
     bell.stop();
    },2000);
}