It is separated from the main game files so users can save bandwidth and disk space if they don't want the music files.
Always ensure you are using the official FitGirl Repacks site to avoid malware, as noted in reports from Back2Gaming . fg-optional-bonus-ost.bin
If you include this file in the same folder as the installer ( setup.exe ), the installer will give you the option to install the soundtrack along with the game. Helpful Tips It is separated from the main game files
Are you having trouble with a or a "missing file" error? fg-optional-bonus-ost.bin
If you only want to play the game and don't care about having the music files in a separate folder (like MP3 or FLAC), you can skip downloading this file entirely.