Current version: 0.1
createcddb.tcl is a utility for creating cddb entry files for ussage with disc-cover. It requires tcl, mp3info and cdir (part of cdtools).
Just download this file, place it in some directory in your path, chmod +x it and it should work
Mind that createcddb requires both the m3u playlist used to create the cd, the mp3's mentioned in that playlist and the cd itself to work.
The files created by this utility don't include the cddb ID and are therefore probably not really valid, but they do work with disc-cover -f. I'll probably solve this soon.