Easytag: Programa para editar los tags de los mp3 y de otros formatos

Un buen programa en GTK para editar los tags es Easytag:

[dalfa@Mdv_R00lz ~]$ urpmq -i easytag
Name        : easytag
Version     : 1.99.11
Release     : 0.1.20060plf
Group       : Sound
Size        : 2285490                      
Architecture: i586
Source RPM  : easytag-1.99.11-0.1.20060plf.src.rpm   
Build Host  : ryu.zarb.org
Packager    : Götz Waschk 
URL         : http://easytag.sourceforge.net
Summary     : Tag editor for MP3, OGG files
Description :

EasyTAG is an utility for viewing and editing tags of MP3, MP2, FLAC,
Ogg Vorbis, MP4/AAC, MusePack and Monkey's Audio files. Its simple
and nice GTK+ interface makes tagging easier under GNU/Linux.
Features:
- View, edit, write tags of MP3, MP2 files (ID3 tag with pictures),
  FLAC files (FLAC Vorbis tag), Ogg Vorbis files (Ogg Vorbis tag),
  MP4/AAC (MP4/AAC tag), and MusePack, Monkey's Audio files (APE tag),
- Can edit more tag fields : Title, Artist, Album, Disc Album, Year,
  Track Number, Genre, Comment, Composer, Original Artist/Performer,
  Copyright, URL and Encoder name,
- Auto tagging: parse filename and directory to complete automatically
  the fields (using masks),
- Ability to rename files and directories from the tag (using masks) or by
  loading a text file,
- Process selected files of the selected directory,
- Ability to browse subdirectories,
- Recursion for tagging, removing, renaming, saving...,
- Can set a field (artist, title,...) to all other files,
- Read file header informations (bitrate, time, ...) and display them,
- Auto completion of the date if a partial is entered,
- Undo and redo last changes,
- Ability to process fields of tag and file name (convert letters into
  uppercase, downcase, ...),
- Ability to open a directory or a file with an external program,
- CDDB support using Freedb.org servers (manual and automatic search),
- A tree based browser or a view by Artist & Album,
- A list to select files,
- A playlist generator window,
- A file searching window,
- Simple and explicit interface!,
- French, German, Russian, Dutch, Hungarian, Swedish, Italian, Japanese,
  Ukrainian, Czech, Spanish, Polish, Romanian, Danish, Greek and Brazilian
  Portuguese translation languages,
- Written in C and uses GTK+ 2.4 for the GUI.

Easytag Tag Editor
http://easytag.sourceforge.net/