Mp3tag is a powerful and yet easy-to-use tool to edit metadata (ID3, Vorbis Comments and APE) of common audio formats.

It can rename files based on the tag information, replace characters or words from tags and filenames, import/export tag information, create playlists and more.

Mp3tag supports online freedb database lookups for selected files, allowing you to automatically gather proper tag information for select files or CDs.

Mp3tag supports the following audio formats :

- Advanced Audio Coding (aac)
- Free Lossless Audio Codec (flac)
- Monkey's Audio (ape)
- Mpeg Layer 3 (mp3)
- MPEG-4 (mp4 / m4a / m4b / iTunes compatible)
- Musepack (mpc)
- Ogg Vorbis (ogg)
- OptimFROG (ofr)
- OptimFROG DualStream (ofs)
- Speex (spx)
- True Audio (tta)
- Windows Media Audio (wma)
- WavPack (wv)

Main featues of Mp3tag :

- Write ID3v1.1-, ID3v2-, APEv2-Tags and Vorbis Comments to multiple files at once
- Automatically create playlists
- Recursive subfolders support
- Remove parts or the entire tag of multiple files
- Rename files based on the tag information
- Import tags from filenames
- Format tags and filenames
- Replace characters or words from tags and filenames
- Export tag information to user-defined formats (like html, rtf, csv, xml)
- Import tag information from an online database (also by text-search)
- Import tag information from a local database and much more...

Changes in Mp3tag 2.42 :

- LNG: Belarusian language file.
- FIX: calculation of bitrate at APE files ignored APEv2 tag size.
- FIX: cancel option at Tag Sources was ignored when asking whether existing cover in directory should be overwritten.
- FIX: undo rename overwrote tag of current visible files in some rare error cases.
- NEW: MP4 fields ITUNESMEDIATYPE, TVEPISODEID, TVNETWORK, TVSEASON and TVEPISODE.
- FIX: runtime error when undoing operations for files where file name contained percent character.
- CHG: SHOW and SHOWSORTORDER MP4 tags renamed to TVSHOW and TVSHOWSORTORDER.
- CHG: memory consumption improvements for large music libraries with cover art.
- NEW: action type 'Split fields by separator'
- NEW: tag sources dialogs now with Back buttons.
- FIX: changing cover to 'Back cover' was ignored at MP4s with Nero Digital tags.
- FIX: binary ID3v2 UFID frames were not read and preserved correctly.
- FIX: fixed wrong button state at column configuration dialogue.
- NEW: support for drag'n'drop of cover art from Mp3tag.
- NEW: support for padding in Ogg Vorbis files to improve tag writing performance.
- CHG: removing and deleting of files now separated into different menu items.
- FIX: possible crash caused by ill-formatted action files.
- CHG: installer information is now stored at HKLM or HKCU in Windows Registry based on user privileges.
- FIX: minor issues with displaying of error messages.
- NEW: type and description of cover art can now also be set via the Tag Sources dialog.
- NEW: support for Ogg Vorbis files with OGA file extension.
- FIX: drag'n'drop of cover art from Firefox 3 did not work.
- FIX: installer ignored different user-defined startmenu folder.
- FIX: 'Edit > Undo' was not activated in all cases.
- FIX: fixed possible deadlock situation at action 'Remove fields except'.
- FIX: playcounter of ID3v2 POPM frame was written to the wrong byte.
- NEW: context menu for cover-related functions now also available at the extended tags dialog.
- NEW: scripting functions $meta(x), $meta(x,n), and $meta_sep(x,sep).
- CHG: fields with multiple matching values are now displayed individually at the extended tags dialog also for multiple files.
- FIX: progress bar showed wrong status in some cases when reading multiple directories from Explorer.
- FIX: runtime error under Windows Vista at accessing MP3 files that have been moved outside of Mp3tag.
- FIX: horizontal scrollbar wasn't displayed after changing columns on some systems.
- NEW: description of cover art can now be changed via the context menu of the cover art display in the main view.
- NEW: type of cover art can now be changed via the context menu of the cover art display in the main view.
- NEW: type of cover art is now displayed in the main view.
- CHG: open and save dialogs are resizeable now.
- FIX: arrow symbol for helper menu at 'Tag - Filename' was not displayed on some systems.
- CHG: handling of Ctrl+A in edit fields to select all text.
- CHG: linebreaks in multi-line edit fields now via Ctrl+Return.
- NEW: added _FOLDERPATH filtering option.
- CHG: filtering by _PATH uses the complete file path now.
- FIX: deleting files with Ctrl+Del sometimes only removed them from the file list.
- FIX: some actions created empty tag fields if applied to non-existing tag fields with the same name.
- CHG: linebreaks in ID3v2 comments now CR LF (0x0D 0x0A) instead of 0x0A for compatibility reasons.
- CHG: Mp3tag now ignores the tag alter preservation flag in ID3v2 frames.