[8FS_Bulau]

Unfortunately, I don't know what you could compare them to, except for your backup unmodded 4.08m game. I don't have an install that matches yours. Do a check, for starters, and see how all the .SFS files compare (name and file size) between your modded game and the backup.

I'll make a copy of my unmodded game, apply the same sound mod as you, and see if I can recreate the problem.