Kid3 2.3
(KDE Sound Application)
If you want to easily tag multiple MP3, Ogg/Vorbis, FLAC, MPC, MP4/AAC, MP2, Speex, TrueAudio, WavPack and WMA files (e.g. full albums) without typing the same information again and again and have control over both ID3v1 and ID3v2 tags, then Kid3 is the program you are looking for.

With Kid3 you can:
– 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, FLAC, MPC, MP4/AAC, MP2, Speex, TrueAudio, WavPack, WMA, AIFF and WAV files
– 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 freedb2.org, MusicBrainz, Discogs, Amazon and other sources of album data
– Export tags as CSV, HTML, playlists, Kover XML and in other formats

changelog:
Sat Mar 2 09:36:02 CET 2013 Urs Fleisch
* Release 2.3
* New:
+ Automatic batch import for multiple directories.
+ Import catalog number and release country from Discogs and
MusicBrainz.
+ Quick access tags are configurable for tag 2.
+ Setting for default file name to save cover art.
+ Select all in directory.
+ Apply text encoding.
+ Support Qt 5.0.
* Improved:
+ Better responsiveness when working with a huge number of files,
long operations can be aborted (filtering, renaming, expanding).
+ Support custom frame names in formats and imports.
+ Display accuracy and cover art URL for imports.
+ Added more unified frame types.
+ GUI and usability.
* Fixed:
+ Swapped mapping of too and enc for M4A files.
+ Compatibility of ID3v2.4.0 COMM frames with iTunes.
+ Do not remove spaces in Vorbis comment field names.
+ Crash and decoding for fingerprints with libav 9.1.

Mon Dec 3 11:09:12 CET 2012 Urs Fleisch
* Release 2.2.1
* Improved:
+ Updated Czech translation.
* Fixed:
+ Fixed selection of language and handbook with Qt 4.8.

Fri Oct 26 17:07:27 CEST 2012 Urs Fleisch
* Release 2.2
* New:
+ Option to load last opened file on startup.
+ Option to use locale for character conversion.
+ Support new features of TagLib 1.8: More ID3 frames, ID3v2.3,
tracker modules (MOD, S3M, IT, XM).
+ Support use of GStreamer instead of FFmpeg for Chromaprint decoding.
+ …read more
Source: FULL ARTICLE at KDE Apps