I've been reorganzing my sound effects library recently and have had to edit a large number of FLAC files, adding and editing descriptions, normalizing fields etc. and this is one of the tools I've come up with for updating a large number of FLAC files in an easy qay quickly. It works completely in the command line and is designed to be used with your favorite text editor.

Workflow

Create a new MFBATCH_LIST file for a directory of FLAC files.

$ cd path/to/my/flacs 
$ mfbatch -c

Edit the MFBATCH_LIST file in vim, or nano, or whatever your favorite text editor is.

$ mfbatch --edit

The MFBATCH_LIST file will contain a transcript of all of the flac files in the selected folder along with their current metadata.


:set ALBUM 'Test Album 1'
:set DESCRIPTION 'Tone file #1, test tone 440Hz'
./tone1.flac

:set DESCRIPTION 'Tone file #2, also 440Hz'
./tone2.flac
:unset DESCRIPTION

./tone3.flac

After you've made the changes you want to make, write them to the files.

$ mfbatch -W