MIDI problems when launching applet through browser

[Udit Manektala]

So basically Im trying to play a MIDI Note on the Mouse onClick and it works fine in my eclipse workspace but but doesnt really work when i play it through the browser or the applet viewer.
Here's the code

    
public class FretBoard extends Applet implements MouseListener,
MouseMotionListener, Runnable, ActionListener {
MIDI midi = new MIDI();
...
...
...
public void mousePressed(MouseEvent arg0) {
System.out.println("Play Note");
midi.playSingleNote(60);
repaint();
}
  } //End applet Class
 

//MIDI Class
class MIDI 
{
Sequencer sequencer=null;   
Synthesizer synthesizer=null;
Sequence mySeq=null;
Track t=null;
 Thread animator=null;
 int volume=83;
 int timeCounter=0;
 int tempo=120;
 
public static final int END_OF_TRACK = 47;
{
try{
  sequencer = MidiSystem.getSequencer( );
      sequencer.open( );  
      synthesizer = MidiSystem.getSynthesizer( );
      synthesizer.open( );
      sequencer.getTransmitter( ).setReceiver(synthesizer.getReceiver( ));
  mySeq=new Sequence(Sequence.PPQ,10 );
      t = mySeq.createTrack();
}
catch(Exception e)
{
System.out.println(e);
}
}
 

public void playSingleNote(int note)
{
    ShortMessage myMsg = new ShortMessage();
   ShortMessage myMsg2 = new ShortMessage();
   // Start playing the note Middle C (60), 
   // moderately loud (velocity = 93).
   try{
   myMsg.setMessage(ShortMessage.NOTE_ON, 0, note, 93);
   myMsg2.setMessage(ShortMessage.NOTE_OFF,0, note, 93);
 
   long timeStamp = -1;
   Receiver rcvr = MidiSystem.getReceiver();
   //repaint(); 
   rcvr.send(myMsg, timeStamp);
   Thread.sleep(200);
   rcvr.send(myMsg2, timeStamp);
   }
   catch(Exception e){}
}
public void setTempo(int bpm)
 {
tempo=bpm;
 }
}