The term "optional" can be misleading. Whether you need this file depends on how you want to play:
: Ensure you have every part of the English VO (e.g., .part1 through .partX). If even one part is missing, the installer cannot "unzip" the audio. fg-optional-english-vo.part1.rar
: Place the .rar files in the same folder as the main setup.exe and the .bin data files. The term "optional" can be misleading