I use foobar with the live show tagger plugin to tag shows
if I ever need to reseed a show I just add the directory in foobar, right click on the files and hit remove tags
takes about 3 seconds to do each of these
was just gonna post this,
you could also convert FLAC > WAV > FLAC and will have your original FLAC files to match your md5s
this is part of the reason im really glad ive done ffp and md5 for each file
as far as checking ffp files, the easiest way ive found is to use Traders Little Helper