Just a notice, the servers have moved to a new IP block. If you are having connection problems, you might have to recompile your application(s).
eTantrum has released its Songprint SDK and created a project here on SourceForge to help coordinate its development.
Songprint is a GPLed library that can automatically identify any piece of music. It does this by determining a song's unique audio "fingerprint", which is based on the its acoustic properties and is independent of the song's method of encoding. Most importantly, it is not in any way dependant on ID3 tags or other information stored in the file itself. If it cannot identify a song, it will give a URL where the song can be added to our database. ... read more