This is a very cool application! Intuitive interface, fast and versatile! I can see where this application may be going: communication with FreeDB (not CDDB as Gracenote has declared CDDB proprietary), adding CD's from eeCD to the CD Remote Database, having eeCD serving a second database file in which we can store additional information we'd like to store about our CD's... endless possibilities! Oh, Unremarkable: a magic number is a number calculated from the number of tracks and the duration of each track (in minutes:seconds:frames) with which a more-or-less unique entry in the database is guaranteed.