The soundenglish.dat and soundenglish.fat files are essential audio archives located in the game's data_win32 folder, and they can often be restored or activated by changing the language settings in the game launcher or the GamerProfile.xml file. If you'd like, I can help you:
He didn’t touch the machine for an hour. When he rebooted from a Linux USB, the internal drive was wiped. Zeroes. But the second file—the misnamed sound_english_fat.fat —was still mounted on the USB’s read-only partition. The soundenglish