NPR's First Listen currently has the soundtrack to Inside Llewyn Davis available for streaming in full.
You can check out the full track listing over at allmusic and the trailer below.
Apparently the film is based on Dave Von Ronk's memoirs and is directed by the Coen Brothers. The soundtrack is pretty and pleasant and makes me wonder what the tone of the film is going to be - mocking, reverential, loving, funny...
Either way, I'll give it a look and hope it's not in the same vein as was A Mighty Wind which hit a little too close to home for somebody who still watches the folk PBS funddrive specials with love.