//mashlet.setPixelSize(500, 400);
//setWidget(mashlet);
String mimeType = getMimeType(ext);
activeSound = soundController.createSound(mimeType,url,true);
// add a sound handler so we know when the sound has loaded/completed
activeSound.addEventHandler(new SoundHandler()
{
public void onPlaybackComplete(PlaybackCompleteEvent event) {
index++; // pint to the next file
playNext(callback);
}