I am really digging this band, Exit Clov. They are a DC-based quintet that has a very jazzy/latin feel to their indie rock style. A very vitriolic bass, groovy drums, and a smooth female voice make the group unique, but also incredibly accesible. They have a couple EPs up for sale, and it looks like an album is due out soon. I would love to see these guys live next time I'm in DC! Woo!
My personal favorite MP3 blog, Music for Robots, used to have an MP3 up, but it seems to have gone down since, uh ... this morning. So, just get "Orange Rust" here instead!