iPhone hacking extraordinaire Erica Sadun has come up with another great iPhone application called Listen. Listen will allow you to hold your iPhone up to a radio to get the name of the song, the artist's name, and the name of the album. Very cool!!
"Download a copy of the Listen beta. It’s still *very* beta. Install it on your iPhone, get near music and run it. It will sample the music for 5 seconds and then attempt to contact the id server. If it succeeds, great, you’ll see the song, artist and album. If it fails, nothing happens. You just wait 30 seconds and if you haven’t gotten an ID, quit and restart the program."