Sound-english.fat Files - Google: Far Cry 3 Sound-english.dat And

The Sound-english.dat and .fat pair form a optimized for fast seeking and partial loading of localized audio. The design prioritizes:

You cannot simply rename sound-french.dat to sound-english.dat . The internal file paths inside the .fat file are hardcoded. You must actually download the correct English audio pack from your game launcher or a trusted archive (be wary of malware on random file-hosting sites). The Sound-english

In Far Cry 3, the sound_english.dat and sound_english.fat files function as a paired archive system, with .fat serving as an index to audio assets stored in the .dat container. These files are primarily modified by users to fix language issues or to extract audio assets using external tools, such as Gibbed's Dunia 2 Tools, and are found in the game's data_win32 directory. Read the full, technical details on managing Far Cry 3 files at PCGamingWiki . Far Cry 4 "Dunia" .fat/.dat archives - ZenHAX You must actually download the correct English audio