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I have a problem with this...

import javax.swing.*;
import sun.audio.*;
import java.awt.event.*;
import java.io.*;

public class PikaPlatformer
{

   //-----------------------------------------------------------------
   //  Creates and displays the application frame.
   //-----------------------------------------------------------------
   public static void main (String[] args)
   {
      JFrame frame = new JFrame ("Direction");
      frame.setDefaultCloseOperation (JFrame.EXIT_ON_CLOSE);

      frame.getContentPane().add (new PikaPlatformerPanel());

      frame.pack();
      frame.setVisible(true);
   }
}

How would I insert sound into this I just want music to play in my game. Any suggestions?( this is just the jFrame)