I was using Picard to add some extra tags on a directory of MP3 files. The particular album was not already in the MusicBrainz database, so I figured I’d submit it myself. I added in the catalog number and date to all the files (which already had the Title, Artist, Track#, and running time in the files tags, so I figured it would be OK to save them (I have the application set to correct file names).
It wiped out the filenames and replaced them with “_mp3 (##)” filenames, even though the tag information was already available. Now I need rto look for a command-line tool to read the tag info and do a rename on them (under Linux). EasyTag can’t do it without doing a rename anyway, just to get the .mp3 extensions back.