I've tried to move all of my CDs to an mpd server, and even that has been only partially successful. It's just so much easier to browse in a physical space. It might help if tagging wasn't such a pain for non-pop music.
It's not %100 though so you do have to do a quick verification that it got the right one (some tracks can end up on compilation discs). Normally a normal lookup is better/quicker than the fingerprinting.