Any reliable online services similar to iPhone's Shazam application?

Anyone able to recommend any reliable online services similar to iPhone’s Shazam application? – A while back I downloaded a (free, legal) mp3 of a song which I like very much and would like to buy the album it came from. Trouble is, I changed the original file name in error (when shortening a batch of mp3 file names for easy reading in mp3 player’s small view window) – basically, assigned it the name of another mp3 track. I can’t remember the artist’s name, the song title – or which unsigned indie music blog I downloaded it from. No-one I’ve played the track to has been able to identify it. Guess I could always stop a stranger in the street and ask to use his or her iPhone’s Shazam…