Java 3D background Music

Newbie & Debugging Questions
#1

Hey guys !!!

edit: Oh i noticed i posted it twice. unfortunately i cant delete it :-/

I want to implement background music in java 3d !!! but for some reason it doesnt work and I dont know why =(

i hope someone can help me out =( maybe i just forgot to add something ? :-/

this is my code


public class World  implements KeyListener   {
	
	
	
	JFrame frame = new JFrame();
	TransparencyAttributes objTransp;
	
	
	GraphicsConfiguration config = SimpleUniverse.getPreferredConfiguration();
	Canvas3D c = new Canvas3D(config);
	SimpleUniverse u = new SimpleUniverse(c);
	
	
	Scene s = null;
	TransformGroup ViewTG = u.getViewingPlatform().getViewPlatformTransform();
	
	
	Transform3D ViewT3D = new Transform3D();
	  }

	
	public World(){
		
	    
		TransparencyAttributes objTransp = new TransparencyAttributes(TransparencyAttributes.FASTEST, 0.1f);
		objTransp.setCapability(TransparencyAttributes.ALLOW_VALUE_WRITE);
		objTransp.setTransparencyMode(TransparencyAttributes.BLENDED);
		
		
		
		frame.add("Center",c);
		frame.addKeyListener(this);
		frame.setFocusable(true);
		
		OrbitBehavior ob = new OrbitBehavior(c);
		
		u.addBranchGraph(createSceneGraph());
		

                //Add Method for BackgroundSound
		u.addBranchGraph(createBackgroundSound());
		
		
		
		
		
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		frame.setSize(1600, 850);
		frame.setVisible(true);
		
	

	
		 
		    ob.setSchedulingBounds(new BoundingSphere(new Point3d(0.0,0.0,0.0),Double.MAX_VALUE));
		    u.getViewingPlatform().setViewPlatformBehavior(ob);
		


	}
	
	
	public BranchGroup createSceneGraph(){
		

            return RootBg;
	}
	
	
       private BranchGroup createBackgroundSound()
    {
      BranchGroup objGroup = new BranchGroup();
      
      AudioDevice audioDev = u.getViewer().createAudioDevice();
      if (!audioDev.initialize())
      {
        System.out.println("Failed to init audio device, exiting!");
        System.exit(1);
      }
      
      MediaContainer rain = new MediaContainer("pte.wav");
      rain.setCacheEnable(true);
      
      BackgroundSound bgs = new BackgroundSound(rain, 1.0f);
      bgs.setLoop(-1);
      bgs.setEnable(true);
      objGroup.addChild(bgs);
   
      return objGroup;
    }
	
		
   
	    public static void main(String[] args) {
		
		World w = new World();
		
		
	}


	
	
}

ERROR

java.lang.UnsupportedOperationException: No AudioDevice specified
	at com.sun.j3d.utils.universe.Viewer.createAudioDevice(Viewer.java:986)
	at World.createBackgroundSound(World.java:198)
	at World.<init>(World.java:111)
	at World.main(World.java:1124)
Java 3D: audio is disabled
Exception in thread "main" java.lang.NullPointerException
	at World.createBackgroundSound(World.java:199)
	at World.<init>(World.java:111)
	at World.main(World.java:1124)

it would be so nice if someone would help me :persecutioncomplex:

best wishes
david