I recently installed XP Pro, and I keep experiencing an audio loop that sounds just like the playback of an audio cd with a scratch on it. This happens with games, internet audio and even the mouseclick. I have a Abit KR7A-RAID mobo, Soundblaster Live 5.1 Plat., XP1900 with the multiplier unlocked and all the latest drivers and bios. Rebooting temporarily solves the problem. Any incite would be appreciated.