onSoundComplete... how do i get it to work

i have made a page containing several pictures, when the pictures are clicked they play a sound.  Next to each picture is a button which, when clicked, writes the name of the sound to an array, all of this works fine but when i push the button to play each sound in order, using the code below in particular the  "newSound.onSoundComplete = function() {" line, the code never goes through it.  i'm probably just missing something but i cannot think of anything. Can anybody help?????



on (click) {
      i = 0;
      j = _root.sounds[i];
      var newSound:Sound = new Sound(this);
      newSound.attachSound(j);
      newSound.start(13, 1);
      
      do {      
            
            newSound.onSoundComplete = function() {
                  i = i+1;                  
                  j = _root.sounds[i];
                  newSound = new Sound(this);
                  newSound.attachSound(j);
                  newSound.start(0, 1);
            };
            
      } while (i<50);
}