Problem with game sound class wrong path

Newbie & Debugging Questions
#1

this is my sound class


package com.kiko.quest.sound;

import java.io.File;

import javax.sound.sampled.AudioInputStream;
import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.Clip;
import javax.sound.sampled.FloatControl;

public class Sound {
   private Clip clip;
   private boolean play = false;
   private String url;

   public static Sound bg1 = new Sound("/res/sounds/Fire magic.wav");

   private Sound(String url) {
      this.url = url;

   }

   public void Play(float volume, boolean repeat) {
      try {

         AudioInputStream audioInputStream = AudioSystem.getAudioInputStream(new File(url));
         Clip clip = AudioSystem.getClip();
         this.clip = clip;
         clip.open(audioInputStream);
         FloatControl gainControl = (FloatControl) clip.getControl(FloatControl.Type.MASTER_GAIN);
         gainControl.setValue(volume);

      } catch (Exception ex) {
         System.err.println("Wrong sound path!");
      }

      if (repeat)
         clip.loop(Clip.LOOP_CONTINUOUSLY);
      else
         clip.start();
   }

   public void Stop() {
      clip.loop(0);
      clip.stop();
   }

}

In my game class I write Sound.bg1.Play(0, true);
I always get Wrong path! I have set the res folder.It says that clip = null everytime, I tried ex.printStackTrace(); but still same the res folder its added in the library other thinks like pictures works fine but the sound no please help