Well now that discogs is back up I can cofirm the tagger works with and without the search system. Did some general bug fixes as well as updated the file renaming features as well as id3 comments. Most noticable change is support for optional renaming for duplicate artists names in the discogs database.
Check out the shell based MP3 tagger, and the mp3 organizer, for batch processing of artists and labels.
This stuff is getting unmaintainable, really needs a rewrite, but so far, I don't think many people use it anyway. Maybe if I get some requests.