Lala.com?

[DonGately]

Has anyone tried this, yet?

Here's the review from CNET:

Editor's Choice

The good: Lala.com provides an easy, inexpensive, and entertaining way to trade used CDs; the site also hosts a decent assortment of Internet radio stations including the once-defunct WOXY, plus user-programmed selections; Lala recently began streaming live performances; community features such as buddy lists, member home pages, member blogs and user-created music reviews make the Lala experience all the more engaging; Lala also offers low-cost new CDs.

The bad: Some CDs languished for months on our Have List without finding any takers; for the best experience, you need to create a relatively large Have List containing 50 or more CDs; you currently have to request the privilege to create your own Internet radio station; because of copyright laws, you can't listen to your own Internet radio station; other limitations also apply.

The bottom line: If you have CDs that you don't want anymore, you can trade them on Lala.com, a very cool online swap meet that also offers Internet radio stations and compelling community features.