a friend gave me some bronzed CDs some years back - he'd be getting replacements for them, the CDs were decaying, I knew how to make backups before they did so. (They've since decayed - this was awhile ago. Yes, there is even a Wikipedia article on what this means-
CD bronzing.) The backups themselves are falling victim to entropy and what-have after four or so years, so I'm glad enough to have other discs and an iPod, and to know how to find information I lacked (track/performer details/...) at the time I got the discs. (Also, the website of one of the recording companies from which most of these CDs were bought has much of that information easily available now, a good service for their consumers- and I've bought many of their discs myself, since they record so much music "up my alley".) That may well occupy my next who-knows length of time, or part of it, but at least it could be fun- as I've said when I've done this before, there's several worse ways to spend time than listening to a lot of music I haven't heard in awhile.