Mumble works with all games as a regular voice chat application.Positional audio refers to your friends teammates being to your left or right and hearing them in the respected speaker.
It gets louder/softer depending on the player's distance from you.
I dont know if you guys have ever used this program, but when using this team work in the game is so much easier.
I hope you can look into this and check it out


Cowboy

link?

http://mumble.sourceforge.net/
The way this works is we would have to get a Mumble server.
http://www.gameservers.com/mumble_murmur/ Its like 13.00 per month
i know you will like it.
I have talked with some guys that use it on Project Reality and they said it works awesome on bad company 2.

Cowboy

i've used mumble in BF Project Reality and cowboy is right it is pretty cool to use