id3v2

This dandy bit of software (only 135KB) allows you to easily change the id3tags of mp3 files. A typical command might be–

id3v2 -a "artist-name" -A "Album-title" *.mp3 <Enter>

For every mp3 in the current directory, it would change the artist name and album title to the information provided within the quotation marks.

For other options, just enter “id3v2” and hit <Enter>.