The Steam version of Red Tide has broken music due to the EXE, this is the GOG EXE to replace it with.
The Steam version of Red Tide doesn't play music due to some sort of error however the music works on the GOG version. (The actual music is in the game's files but the .exe somehow doesn't play them.)
Replace "RedTide.exe" in the game files with the download version.
Thanks for this interesting add-on (or replacing item).
Cheers.