I have defined SOUND* testwav = "mouseover.wav"; and call a function with snd_play(testwav,100,0); in it when mousing over a button but i hear no sound. Maybe my wav file has wrong format or something but as I said earlier I can't get the beep sound either. An other problem is that when I test run my script the screen is black and my panel with button dont show (when I've added a snd_play(testwav,100,0); or similar line). I've read the manual and I must be missing something important...