[JAVA3D] Sound: ClassCastException

[Michael P. McCutcheon]

I'm trying to make a simple background sound work...here is the code:

PhysicalEnvironment pe = tgCamera.getPhysicalEnvironment();
audioDevice = new AudioEngine(pe);
try {
 soundURL = new URL("file:roar.au");
 System.out.println("soundURL: "+soundURL);
} catch(MalformedURLException mue) {
 mue.printStackTrace();
}
if(soundURL!=null) {
 soundMC = new MediaContainer(soundURL);
 BackgroundSound soundBg = new BackgroundSound();
 soundBg.setSchedulingBounds(bounds);
 soundBg.setSoundData(soundMC);
 //soundBg.setLoop(Sound.INFINITE_LOOPS);
 //soundBg.setEnable(true);
 //soundBg.setCapability(Sound.ALLOW_STATE_WRITE);
 addChild(soundBg);
}

It seems to be bombing out at:

soundBg.setSoundData(soundMC);

with the following Exception:

java.lang.ClassCastException: com.sun.j3d.audioengines.AudioEngine
        at
javax.media.j3d.SoundScheduler.checkAudioDevice3D(SoundScheduler.java
:2566)
        at
javax.media.j3d.SoundScheduler.attachSoundData(SoundScheduler.java:26
12)
        at
javax.media.j3d.SoundScheduler.processSoundAtom(SoundScheduler.java:1
285)
        at
javax.media.j3d.SoundScheduler.calcSchedulingAction(SoundScheduler.ja
va:1577)
        at
javax.media.j3d.SoundScheduler.renderChanges(SoundScheduler.java:787)

        at
javax.media.j3d.SoundScheduler.processMessages(SoundScheduler.java:22
9)
        at
javax.media.j3d.StructureUpdateThread.doWork(StructureUpdateThread.ja
va:83)
        at javax.media.j3d.J3dThread.run(J3dThread.java:256)

Any ideas?

thanks,

Mike

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