My iPod has 844 songs on it right now. I got an 8gb one last year, which has allowed me to pump some extra tracks on (I had a 2gb before that I was constantly filling) and while I know quite a few people with huge-sized iPods, 8gb is probably enough for me, haha. I don't often put full albums on, rather just songs I take a liking to when I listen to the album in full. Most of mine come from CDs too, or from the iTunes store. What can I say, I'm old-fashioned here.
Just to try and make myself that little bit bigger here, my other music players have an additional combined 76 or so tracks on them. These are mostly home-made experiments, voice tracks, or songs I've obtained from elsewhere. It's sort of like a miscellaneous category for stuff I don't want on my iTunes/iPod.