I used to be of the opinion that is was "as many as I could find" but in recent times I have revised that thought. I have simply too many CDs and many went unplayed for years on end and some were never going to get played again. I hated the idea of selling any but a shortage of space and a desire not to have any "dead wood" has led me to believe there is another way. I have placed a load of CDs on Amazon marketplace and already have sold 20 odd in just a week. It feels really good to be able to get rid of the excess and to be able to fine tune the collection to be mostly albums I will want to pull of the shelf.
That said, I have embraced downloading (only of full albums I might add) and of playing via the PC. I do that so much now that it outweighs the length of time I listen via my main system. I will be looking at some sort of device to stream wirelessly from the PC to the main setup so that I can listen using the random mode on my Music Jukebox playlists. I still have something like 500 albums I have downloaded and have yet to listen to, so I can safely assume that my addiction is no nearer it's conclusion.