Edita tus etiquetas. Se ve bien y es gratis.

Mp3tag es una herramienta poderosa y fácil de usar para editar metadatos (ID3, Vorbis Comments y APE) de formatos de audio comunes. Puede cambiar en nombre de los archivos basándose en la información de la etiqueta, reemplazar caracteres o palabras de la etiqueta o nombre del archivo, importar/exportar información para las etiquetas, crear listas de reproducción y mas. El programa soporta consultas a una base de datos gratuita en línea para archivos selectos, permitiéndote que automáticamente recolectes la información apropiada para las etiquetas de estos archivos o CDs.

Tiene soporte para los siguientes formatos:

* Advanced Audio Coding (aac)
* Free Lossless Audio Codec (flac)
* Monkey's Audio (ape)
* Mpeg Layer 3 (mp3)
* MPEG-4 (mp4 / m4a)
* Musepack (mpc)
* Ogg Vorbis (ogg)
* OptimFROG (ofr)
* OptimFROG DualStream (ofs)
* Speex (spx)
* True Audio (tta)
* Windows Media Audio (wma)
* WavPack (wv)

Que hay de nuevo:
VERSION 2.41 (for Windows XP/2003/Vista/2008)

[2008-04-12] NEW: support for ITUNESPODCASTCATEGORY at ID3v2 and MP4.
[2008-04-12] NEW: field RATING MM for rating in MediaMonkey style.
[2008-04-12] CHG: TDRL ID3v2 frame (RELEASETIME) now also supported for ID3v2.3.
[2008-04-12] FIX: preview at converter 'Filename - Tag' displayed duplicate entries (since v2.40).
[2008-04-12] FIX: length was not sorted correctly in some cases. On new installations, Mp3tag now sorts by %_length_seconds% numerically.
[2008-04-05] CHG: renamed 'Explorer Shell Extension' to 'Explorer Context Menu' in installer.
[2008-04-05] NEW: option for message before removing of tags.
[2008-04-05] FIX: detection of cover art for display in Tag Panel was case-sensitive and did not detect folder.* including upper-case letters.
[2008-04-04] FIX: refreshing the directory after renaming the directory via an action resulted in empty file list in some cases.
[2008-03-28] NEW: support for ITUNESPODCASTDESC, ITUNESPODCASTID, and ITUNESPODCASTURL at ID3v2 and MP4.
[2008-03-25] FIX: displayed data of previously selected file in Tag Panel when clicking on another file while editing in the file view.
[2008-03-25] NEW: option 'Export duplicate covers' at action 'Export cover to file'.
[2008-03-25] NEW: option 'General > Use natural sorting'.
[2008-03-24] FIX: displayed file size in status bar was wrong after undoing remove file operations.
[2008-03-24] FIX: undo remove file left modified and other technical fields blank.
[2008-03-24] FIX: case conversion on _FILENAME left blank field (introduced in v2.39n).
[2008-03-24] FIX: crash when right-clicking on empty file view column headers.
[2008-03-15] CHG: changed behaviour of F2 and F4 keyboard shortcuts at extended tag dialog.
[2008-03-11] NEW: helper menus for quick access to placeholders and scripting functions at 'View > Columns...'.
[2008-03-10] FIX: action 'Merge duplicate fields' had no effect (since v2.40).
[2008-03-10] FIX: action 'Remove duplicate fields' had no effect (since v2.40).
[2008-03-08] CHG: converter 'Tag - Filename' runs in separate thread now.
[2008-03-08] NEW: 'Utils > Convert Codepage' at freedb dialog.
[2008-03-08] CHG: added mnemonics to filter.
[2008-03-07] FIX: UNSYNCEDLYRICS was truncated to 10 characters (since v2.40).
[2008-03-06] NEW: 'Edit > Undo' runs in separate thread now.
[2008-03-05] FIX: nested subdirectories were not completely removed at undo.
[2008-03-04] FIX: encoding of default HTML export configurations now UTF-8 again (since v2.40).
[2008-03-04] CHG: minor changes to error reporting at export.
[2008-03-03] FIX: preview at converter 'Text file - Tag' displayed duplicate entries (since v2.40).
[2008-03-03] CHG: invalid characters are now automatically removed from the file name at 'Export cover to file' actions.
[2008-03-01] CHG: improved accessibility at extended tags dialog.
[2008-03-01] FIX: navigation to 'Options > Genres' via Tab key was not possible.