Tag is a command line tool that may be used to tag numerous audio files, using various tagging schemes, including ID3v1, ID3v2, APEv1, APEv2, Vorbis and Flac. Tag was originally programmed by Case, but I have adapted it slightly.

Tag can tag files automatically from their filename, by attempting to guess the filename format from one of fifty presets. You can also view tags for files, and create playlists.
Tag is a small tool to work with tags in various compressed audio formats.

Support for multiple standards:
1. ID3v1.x
2. ID3v2.x (reading and removing)
3. APE v1.0
4. APE v2.0
5. Vorbis comments
6. FLAC comments
7. Lyrics3 v2.0.

Tag Features:
1. View tags
2. Generate tags from filenames
3. Modify tag values manually
4. Set tag values from the contents of a text file
5. Tag files with information read from CDDB files
6. Copy tags from one file to another
7. Convert tags to different format
8. Remove tags
9. Rename files based on tag information
10. Move files to directories generated from tag values
11. Generate Winamp playlists (optionally with AlbumList extensions and playing times)
12. Generate text files with information about tracks and album (format customizable)
13. Decode files and name output using tag information
14. Test mode that shows what would happen without actually doing anything to files

The license of this software is Free Trial Software, you can free download and get a free trial.