I have just spent most of my evening on http://betterpropoganda.com downloading mp3s. The site includes reviews, videos and a superb selection of free music. Here’s just a few of the artists with a selection of mp3s available to download (available to play on the site also). Not necessarily new releases, but great if your missing a few.
I urge you to listen to this little beauty: Thomas Fehlmann – Hana, reminds me of the Kompakt Pop Ambient series. Check out the site music player too, a nice (if not limited) alternative to the last.fm player.