eMusic has some free tracks available highlighting what's available over at Daytrotter. Checking out the site, I was greeted by the music of Smoosh, whom I mentioned favorably when I saw them open for the Pipettes, and who have several free songs available on Daytrotter. Their stuff on Daytrotter's pretty good, and the site seems to have a lot of music available (I already had some Casey Dienel tracks from the site, somehow, even though I'm pretty sure I've never been to the site before); one would probably be well rewarded for spending some time in their archives.