I think this refers to a plan 9 program I got from mechiel; I did not see it on quick glance in his contrib directory (mjl) - I'll see whether I can find it back and make it available on sources contrib - unless mechiel beats me to it :-)
Axel. > Hello. I was following the steps in /n/sources/contrib/john/ > USING_JUKE, and I noticed mkmap could use mp3tag. The only program > called mp3tag that I found was a Windows closed-source program to > change tags. Does anyone know where I can find the Plan 9 one? Thanks.