"Audio Lunchbox currently has full album mp3 downloads for PC and Mac from indie labels like Trustkill, Ferret, Epitaph, and Vagrant for incredibly low prices."

Well, low prices being the standard 0.99¢ a song, but the songs are in standard formats like MP3 and Ogg and aren't crippled with annoying digital restrictions (DRM). It's also PC and Mac compatible. (Though I'm pretty sure I'm the only person who uses a Mac anymore. )

I could tell you more, but it's only open to people in the United States. The selection looks pretty cool though.