Background Music in Java3D

Newbie & Debugging Questions
#1

Hey guys!!

i tried to implement some Background music but its not working and i dont know why =(

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());
		u.addBranchGraph(addObjects());
		
		Light(u);
		
                // Add Method for background sound
		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();
		
		
	}

}

And this is the 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)

Can anyone help me out?? Did i forget to add something ??

best wishes
david

#2

hey i solved the problem ! this is code that works =)

PhysicalEnvironment environment = u.getViewer().getPhysicalEnvironment();
	        AudioDevice device = new JavaSoundMixer(environment);
	        device.initialize();
	        environment.setAudioDevice(device);
	        BoundingSphere sbounds = new BoundingSphere (new Point3d(0.0,0.0,0.0),Double.MAX_VALUE);
		    
	        MediaContainer myWave = null;
			try {
				myWave = new MediaContainer(new URL("file:C:/Users/David/Desktop/Castle/pte.wav"));
			} catch (MalformedURLException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
	       
	        BackgroundSound mySound = new BackgroundSound( );
	        mySound.setSoundData( myWave );
	        mySound.setEnable( true );
	        mySound.setInitialGain( 1.0f );
	        mySound.setLoop( -1 );  // Loop forever
	       
	        BoundingSphere myBounds = new BoundingSphere(
	        	    new Point3d( ), 1000.0 );
	        	mySound.setSchedulingBounds( myBounds );
	 
	        	RootBg.addChild(mySound);

thank you!