Mufin.com, however, which launched today, uses a fully automated system that only takes the actual sounds of a song into consideration. In our tests, Mufin often returned good results, but the fact that it doesn't take genres or the quality of a song into account can make for a frustrating experience at times.

Mufin's interface is straightforward and stays out of the user's way. Songs are played through a standard flash player and the AJAX-driven interface is fast and well designed, though it would be nice if you could play similar songs without having to click through to another page.