Leaving a webpage with SoundJS causes Google Chrome to crash

I have a webpage index.php which contains a link to sound.php. On sound.php, sound is played using SoundJS.

When I navigate from sound.php to index.php, Google Chrome usually (but not always) displays an error message ("Aw, Snap!"): http://ift.tt/1eNGrmh

I'm using Chrome 40 for Mac OS. It doesn't matter whether I use a link or the browser's back button.

Here's my code:

sound.php calls a JS function that's using SoundJS:

<script type="text/javascript">      
  var int = [0, 7];
  prepareAudio();  
</script>

As soon as I delete this code, the browser doesn't crash anymore.

prepareAudio() is in an external file:

function prepareAudio() {   

  // Try WebAudio or HTMLAudio
  createjs.Sound.initializeDefaultPlugins();

  // Try flash otherwise
  if (!createjs.Sound.isReady()) {
    // Flash plug-in is not default
    createjs.FlashPlugin.swfPath = "../audio/";

    // Enable flash support
    $.getScript("../../js/flashplugin-0.6.0.min.js");

    // Prefer WebAudio over HTMLAudio. Prefer HTMLAudio over Flash.
    createjs.Sound.registerPlugins([createjs.WebAudioPlugin, createjs.HTMLAudioPlugin, createjs.FlashPlugin]);
    }

  // Get audio files
  var audioPath = "../audio/";

  var manifest = [];
  for (var i = 0; i< audioFiles.length; i++)
    manifest.push({id: audioFiles[i], src: audioPath + audioFiles[i] + ".ogg"});

  // Play audio 
  var queue = new createjs.LoadQueue(); 
  createjs.Sound.alternateExtensions = ["mp3"];
  queue.installPlugin(createjs.Sound);
  queue.addEventListener("complete", function() {playTask(int);});
  queue.loadManifest(manifest);
  createjs.Sound.registerSounds(manifest, audioPath);
}

There's some more code involved. I play sounds using

  createjs.Sound.play(mySound); 

Audio playback is fine in Chrome and other browsers.