puddletag is an audio tag editor for GNU/Linux similar to Windows program
Mp3tag (http://www.mp3tag.de). Unlike most taggers for GNU/Linux, it uses a
spreadsheet-like layout so that all the tags you want to edit by hand are
visible and easily editable.

The usual tag editor features are supported like extracting tag information
from filenames, renaming files based on their tags by using patterns (that you
define, not crappy, uneditable ones).

Then there're functions, which can do things like replace text, trim, change
the case of tags, etc. Actions can automate repetitive tasks. You can import
your QuodLibet library, lookup tags using MusicBrainz, FreeDB or Amazon
(though it's only good for cover art) and more, but I've reached my comma
quota.

Supported formats: ID3v1, ID3v2 (mp3), MP4 (mp4, m4a, etc.), VorbisComments
(ogg, flac), Musepack (mpc), Monkey's Audio (.ape) and WavPack (wv).