TuneSquare is a new ad-supported music download service that lives somewhere in between the world of illegal P2P sites and paid services like iTunes and Rhapsody.

Here's how it works. You visit TuneSquare, browse for songs by category or use the search bar, and begin listening to music. While you listen, a video ad will play. If you like what you hear, you can download the track for free. That's all there is to it.

Unlike some other free download services (Spiral Frog, we're looking at you), there's no DRM on the songs. You can burn them to a CD, and you don't have to revisit the site 30 days to keep your music collection active.