system: amd duron 900, via kt133 chipset, geforce 256, sblive! value, windows xp professional.

since i installed winxp, whenever i am playing an mp3 or other sound, and copy files or access harddrive intensive apps, i get a really annoying crackling sound. it did it with the original winxp sblive drivers, and ive downloaded the new ones from creatives site and it does exactly the same.

any suggestions greatly appreciated.