https://allr6.com/discuss/viewtopic.php?pid=287#p287
Important! RAINBOW SIX 3 GOLD SOUND UPDATE
This fix is so that you can have Athena Sword/Iron Wrath
Sound Files play properly in Rainbow Six 3: Gold (Raven Shield)

1. Download https://soundfix.allr6.com (1.15gb)

Copy the Sounds Folder to your Sounds folder in your
Rainbow Six 3 Gold or Raven Shield folder. Overwrite.

Back up the old folder if you wish but this is a direct copy from my games's files.
Including the needed gun and map sounds from the Athena Sword and Iron Wrath expansions.

Thats it!

This ensures a more complete sound experience.
You WILL notice the fix once its done and its a way better experience to play with the fix.
Tons of missing ambiences and more will now play in game.

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Discord: http://www.tactical-gaming.net (or R6chat.com)