http://sourceforge.net/projects/coolmp3/
http://coolmp3.sourceforge.net

The purpose of this project is to build a searchable database out of a directorystructure of ini files (for album info), id3v1 and v2 tags from MP3s using PHP, MySQL and Apache.
Looks neat. I wonder how processor intensive it is.

Its license is the GNU General Public License (GPL). I dont know what it means, but I'm hoping maybe some of the home brew programs can incorporate it some way.

[I searched but didnt find it so I'm posting it for future reference]