I've had glitches with the music when starting Glest, but I don't think I've had a problem with the sounds when actually playing. I think it might be more of a performance problem than a driver problem, because it seems a lot worse when I have my power settings on low. Sometimes I hear the opening cymbal crash three or four times. I haven't noticed a different between Glest, GAE, and MegaGlest. I guess it couldn't hurt to update the drivers anyway.