Rootkits 092406

I'm almost done ripping all the CD's that we have in my house. With about five left to do, I ran across, or I should say, my computer found, one with a rootkit. Thanksfully my computer found it, but surprisingly, it was a 1992 Fleetwood Mac CD. Does that make any sense at all? I have to think that was an error. I hadn't heard of rootkits until probably 2004. Anyways, it was the 2nd disc of the four disc set, 25 Years: The Chain. This seems very doubtful. Not to mention that these are Warner Brothers discs and I thought that Sony discs were the ones that had rootkits back a year or so ago. What do you think?