The release candodate version says it does, and it links in libFLAC++ or whatever it's called. but I haven't tried messing with my FLAC files yet.

Oh, one major gripe I have, it seems that their ID3v2 tagging truncates fields at 30 chars, which is bogus. I need to figure out why it's doing that. No reponse from the developers yet.

Also, for anyone who's feeling adventurous enough to live on the bleeding edge, I submitted a patch to allow renaming of files based on a custom template. Check the prokyon3 sourceforge page under "patches."