Contains the actual compressed audio data (dialogue, music, effects).
Once you have the files installed, you may still encounter issues. Here is a quick checklist:
Alex had just reinstalled Far Cry 3 on his new gaming PC. The nostalgia hit hard—Vaas’s manic laugh, the tropical breeze, the thumping dubstep flamethrower mission. But when he launched the game, something was wrong.
Actually, the sound files are typically found at: ...\data_win32\worlds\farcry3_main\