You've got some nice things there. I'll definitely be watching those CD auctions as I'm an old 80's hair metal fan
Too bad I don't have a tape player anymore or I'd be all over those cassette auctions as well.
One suggestion is that you should definitely get yourself a digital camera so you can provide pictures in your auctions. I'm sure you'd get much better results and most likely higher final sale amounts that way.
You can find a basic digital camera relatively cheap nowadays. It may not have all the bells and whistles but it'd be just fine for eBay pictures.
Free bump for you!