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

Modders and fans use these archives to extract the game's high-quality audio files. Steam Community

The Sound-english.dat and .fat pair form a optimized for fast seeking and partial loading of localized audio. The design prioritizes: Modders and fans use these archives to extract

You cannot simply rename .dat to .mp3 . You need to extract them. Modders and fans use these archives to extract

: This is the "body." It contains the actual compressed audio data, including dialogue, cinematics, and scripted barks. Modders and fans use these archives to extract

In Far Cry 3, the sound_english.dat sound_english.fat files located in the \data_win32\

Keep in mind that modifying or extracting audio content from games may be subject to copyright and intellectual property restrictions.