I came home to find a letter from pthalogreen waiting for me. Thank you!
Quite a bit of reminiscing and some questions that I'll probably have to think about for quite a while before I know how to answer them.
(And incidentally: it's "die CD", though don't ask me why. Perhaps because it's "die Platte" for a grammophone record and "die Scheibe" for a general disk. Hm, Duden claims it's short for "CD-Platte", which is obviously feminine, but I'm not sure whether most Germans would think of that derivation off-hand.)