How exactly are you cataloguing your CDs, Googs? It certainly ain't by any alphabet...
I catalog in notebooks that I take with me when shopping. Alphabetically, but by first letter of first name, because that's how they do it in Japan, so it was easier that way back then.
I keep three sets of books:
one set for rock, pop, country, classical, easy, etc.
one set for r&b, soul, blues, reggae, Latin, world, etc.
one set for jazz and jazz vocal
Physically, I keep it simple, to avoid shifting CDs all the time. Storage boxes holding 18, 22, or 30 each. I then store all the white-oriented music together, n.p.o. And all the black-oriented music together, n.p.o. Means I can't really find anything, but there is no other way I can control that amount.