Convert the name of mp3 with capital letters on macOS

#1

CONVERT THE NAME OF MP3 WITH CAPITAL LETTERS.
I get an error when wanting to change the names of my mp3s to capital letters. Help does not allow me. My operating system is Mac Os Hit Sierra

#2

It's a limitation of the Wine-based macOS version: case conversion needs to use a temporary filename, so that the system doesn't think that it's overwriting an existing file.

A workaround for this is to add a temporary underscore via the converter "Tag - Tag" for field _FILENAME first with

$caps(%_filename%)_ as format string and then again, to remove the temporary underscore, with

$trimRight(%_filename%,'_') as format string.