Kid3 is a batch ID3-tag editor.

• Edit ID3v1.1 tags
• Edit all ID3v2.3 and ID3v2.4 frames
• Convert between ID3v1.1, ID3v2.3 and ID3v2.4 tags
• Edit tags in MP3, Ogg/Vorbis, DSF, FLAC, MPC, MP4/AAC, MP2, Opus, Speex, TrueAudio, WavPack, WMA, WAV, AIFF files and tracker modules (MOD, S3M, IT, XM)
• Edit tags of multiple files, e.g. the artist, album, year and genre of all files of an album typically have the same values and can be set together.
• Generate tags from filenames
• Generate tags from the contents of tag fields
• Generate filenames from tags
• Rename and create directories from tags
• Generate playlist files
• Automatically convert upper and lower case and replace strings
• Import from gnudb.org, TrackType.org, MusicBrainz, Discogs, Amazon and other sources of album data
• Export tags as CSV, HTML, playlists, Kover XML and in other formats
• Edit synchronized lyrics and event timing codes, import and export LRC files
• Automate tasks using QML/JavaScript, D-Bus or the command-line interface

Note: While the software is classified as free, it is actually donationware. Please consider making a donation to help support development.