This happens mostly on one file, game menu music that repeats. But I now hear it occasionally in the game music. I'm currently using WAVs for music - compressed, not streamed (not the uncompress method). I can't use streamed, because I need to keep the audio files hidden in the compile. And lastly, I have my music sound turned down to .5. No pitch change like the other guy with a problem. Gamemaker 1.4.