I have gotten CDex working almost perfectly for my use. I am using it to create FLAC files and put a M3U playlist in a special directory. It works fine except that in the Playlist it lists a file as:

E:\Vocals\John Pizzarelli\Let There Be Love\12 - Just One More Chance - John Pizzarelli.flac.flac

Note the redundant flac.flac for the filename. The files are created fine, without flac.flac extensions, so obviously the playlist doesnt' work.

Here are my settings:
ID3 Tag settings OFF in generic
External encoder, pointing to the FLAC directory on my computer
Parameter string:

-6 -o %2 -T "artist=%a" -T "title=%t" -T "album=%b" -T "date=%y" -T "tracknumber=%tn" -T "genre=%g" -

All Checked: Hide Dos Window, Send WAV to stdin, On the fly encoding.

What can I do to fix this bug?

Fix the source yourself, maybe?

I'm just kidding. You might want to tell the folks at http://cdexos.sourceforge.net/boards/ if you find that they don't know about it yet.