I've just released Mp3tag v3.24 and wanted to outline some of the new features and changes:
The Playlist Generator is available via File → Generate Playlists... or Ctrl+Shift+P and enables the creation of several playlists at once based on a format string that is used to partition the set of selected files. This way, you can create, e.g., one playlist for each album or one for each directory. It's quite powerful! And it's also available as an action for Mp3tag's action groups.
I've extended the Remove Duplicate Fields action to allow for selecting the duplicate field to remove (before it removed all duplicate fields) and to allow for removing only duplicate fields that have the same content.
For people who are using FLAC, I've added Utils → Optimize FLAC to the right-click context menu which ensures that 4KB of padding exists in the file. It's especially helpful if metadata isn't displayed in Windows Explorer, because either the embedded cover or the embedded padding is too big to handle.
As always, thank you for reading, your interest and your support.
Enjoy and take care