how could you?
you really should sell the cases - I'd buy them - I have so many cracked ones and it annoys the heck out of me. I even disassemble those free AOL ones to reuse the cases and replace the cracked cd cases
I don't like them sitting in a cd rack though. Right now, mine are boxed up, but once I move into the new place, they'll go right into the closet - I'll have fitted shelves but in a closet. The music is all on my computer and ipod - the cds and cases stowed away, out of sight, out of dust collection.
I used to burn copies on cds and have those in binders because I am paranoid about my original cds - thanks to the ipod, I don't need to do that anymore.