I downloaded the game from here:

https://www.revoltrace.net/downloads.php

as I didn't know it was on GOG nor that it was removed. However, the 1207 patch that comes with it removes the music folder. WHY? That's stupid.

The other threads I looked at here had no good download links to the the music so I could put them back, and this page was no good either for the same reason:

https://www.tapatalk.com/groups/revolt_live/how-i-can-enable-the-music-of-re-volt-t1308.html

And the promising looking KDL link on this page is worthless because the link is dead.

https://www.tapatalk.com/groups/revolt_live/re-volt-soundtrack-download-topic-t1411.html

I need this issue fixed because the game is unplayable otherwise.

EDIT: I've just found this: https://re-volt.io/downloads/misc#main-soundtracks

I'll try that. If it works, I advise anyone else with this bug to do the same.

EDIT 2: It doesn't work. >:(

EDIT 3: Thrid time's the charm: it does work! It just has to be the GL version that I run in order for it to read the music.