isn't on any of their cds... i have them all, and know them all... i'm guessing you just found it on a p2p program? i have a couple of songs done by slipknot and someone else, but they're not on any cd's either (slipknot's or the other bands) i don't know where they come from exactly.. i'm guessing they just do them, and put them out on the web for publicity..