   Need Help, I have problem about playing mid on 6630
  I working on a game that play on S60 MIDP2.0I have the problem that occur on Nokia 6630 only (Nokia6600, 6681 already pass)the problem display as  NullPointerExceptionI try to cut the code to find out what is the real problem, and then I saw about the playing sound cause this errorthe error appear when I call  play() function in my song class ----------------------------------------------------------------------------public static void play(){try{stop();player.setLoopCount(1);player.realize();   player.prefetch();player.start();} catch (MediaException e){}}------------------------------------------------------------------------------about the creating player instance is---------------------------------------------------------------------------------public void load(String fileName){InputStream is;try{  is = getClass().getResourceAsStream(fileName);  player =Manager.createPlayer(is,"audio/midi");  is.close();} catch ( Exception e ){}----------------------------------------------------------------------------------as I said other phone models can play so the file name is must be existanyone know how to solve this problem or know how to make the play song perform better ( N70 can't play the song for now but program didn't terminate ), thank you very muchThank you for any suggestion and your kindnessBest RegardsNeon   
  Try doing all that in a seperate thread...some phones require that..not sure why   ;  What do you mean by seperate thread?? I don't understand how to do.could you explain to me, thank youThank you very much for your adviseNeon   