WOXY.com, the former alt.fm of Oxford, Ohio, has featured some of America's best band on its weekly live, in-studio show, Lounge Acts. Recent acts have included The Broken West, Ra Ra Riot, and the Forms. In the archive, you can find acts like Neko Case, Pernice Brothers, and Yo La Tengo. Almost every show is available for download at decent quality. I recommend The National or any of the Forget Cassettes shows.
While you're there, check out WOXY's best of '07.