If you're into African music, and that can mean everything from Zambian folk to Ghanian high-life, there's a great site for the music that you've never heard of, and probably won't in the US. Matsuli music is a blog about the incredibly diverse world of African music, and tracks that the blog's authors grew up with. The stuff there is hella cool: James Brown in Africa, Township Groovin - tracks from Soweto's shakin bands, Tanzanian Radio tracks, and way way more.
These guys are doing a great job promoting the music that the world needs to hear. It's very much like the shows that KRUU hosts are doing - they find the music they love and make the world aware of it.