I've been uploading cd's to my computer lately in iTunes I find that when I copy a lot of the cd's to iTunes or even Windows Media Players that a lot of them don't burn very clearly and sound really scratchy when I go to play them later? On the actual cd's themselves they sound perfect but only when I burn them to my comp they turn out scratchy and rough sounding?! Anyone else ever have this problem before? Any ideas as to why this could be happening?