PROJAM is a mod for AvP2 that redefines all the skins, sounds, physics, and gameplay for both the Multiplayer and Single Player experience. I didn't see any version of this mod in the downloads section here so I decided to upload it myself. I got it from GameFront.com. Version 4.4. Uploaded by Olde. I am in no way affiliated with PROJAM or its developers. I simply wanted to make this available because all other links to it are dead. Enjoy.
To install: create a folder in your Fox\Aliens vs. Predator 2 folder called "custom" (without the quotation marks).
Put PROJAM4_4.REZ in this custom folder.
Run avp2.exe. At the opening menu, click Options. In the command line, type: -rez custom/PROJAM4_4.REZ and make sure you've selected "Always these command-line parameters." Now when you run the game, you should be playing PROJAM 4.4.