Java Sound only plays once and then wont play again

Hello I have a game that needs to be able to play sound. when I click a button the sound plays but when I click it again the sound wont play this is my sound class:

  public class Sound {

public static final Sound select = new Sound("/selectBTN.wav");
public static final Sound scroll = new Sound("/btn.wav");

//Phone calls
public static final Sound call1 = new Sound("/calls/call1.wav");
public static final Sound call2 = new Sound("/calls/call2.wav");
public static final Sound call3 = new Sound("/calls/call3.wav");


   private Clip c;

   public Sound(final String filename) {
       try {
           c = AudioSystem.getClip();
           final AudioInputStream inputStream = AudioSystem.getAudioInputStream(Sound.class.getResourceAsStream(filename));
           c.open(inputStream);
           c.addLineListener(new LineListener() {

               @Override
               public void update(final LineEvent event) {
                   if (event.getType().equals(Type.STOP)) {
                       System.out.println("Do something");
                   }
               }
           });
       } catch (final Exception e) {
           e.printStackTrace();
       }
   }

   public void play() {
       try {
        new Thread() {
            public void run() {
                if (!title.mute) {

                    c.start();
                }
            }
        }.start();
    } catch (Exception e) {
        e.printStackTrace();
    }
   }

}

I use this line: Sound.call1.play(); to play the sound. can any one help me to fix this problem thanks in advance:)