Keith, assuming you bought a disk "for a reason" and that piece was the one you filed the disk under, how to you account for other pieces on the disk? How to you label them so you can find the "secondary" or "B side" works?
I don't. I simply file the disc under the composer who wrote the piece that I wanted.
I am in the process of cataloguing my CD's electronically and ripping them to FLAC at the same time. It's a pretty long process, I have been at it for a year and i'm only halfway through! Once I am done, I no longer have to ask myself ... "hmm, I think I have that piece somewhere but I can't remember where" ...