Update: For an online service that works like Tunatic, check this post from us. For a roundup of identification services, check this post.
Fans of Sony Ericsson can surely boast about their TrackID service, which gives you the details of a music track currently being played, like the name of the artist, and the song title. You just have to record a few seconds of music with TrackID, and within seconds, you will automagically have the details of the song.
PC users like me have long searched for a similar application, to identify music currently being played. Sometimes, you hear a track somewhere, and would like to know which band or artist is playing.
Well rejoice, now you can!