title: Android Notification Builder: How to setSound so that sound plays in a looper
body: <p>I am implementing Notification as below. Default Alarm sound is playing fine, but only for once. All i want is to play it repeatedly until the tap is registered.</p>
  
  <pre><code> NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(this)
                      .setSmallIcon(R.drawable.ic_launcher)
                      .setContentTitle("I Am Fine")
                      .setStyle(new NotificationCompat.BigTextStyle()
                      .bigText(NOTIFICATION_MESSAGE))     
                      .setContentText(NOTIFICATION_MESSAGE)
                      .setAutoCancel(true)
                      .setDefaults(Notification.DEFAULT_LIGHTS | Notification.DEFAULT_VIBRATE);
  
              Uri alarmSound = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_ALARM);
              mBuilder.setSound(alarmSound,AudioManager.STREAM_MUSIC);
  </code></pre>
  
  <p>The second parameter to setSound doesn't showing any effect. Please help !</p>