I have just released the first public version of 'mp3tool' for Linux.

This is a command-line utility to examine .mp3 ID3 fields and headers,
and includes various options for certain manipulations.

It is also capable of FIXING bad/corrupted VBR headers,
so that FF and REW work again on the Empeg player.

Free for downloading (Linux x86 only, for now): http://rtr.ca/empeg/

-ml (Linux kernel dude)