Yes, I have all of the .m3d files.

The 3D audio was working perfectly until I reinstalled the game. After reinstalling, I put all of the miles .m3d files back into the snddrivers directory. But after changing the config file it won't work this time around, and upon launch the console says that both providers (Creative Labs EAX and Miles 2D Fast positional audio) are opened. Then I get messed up sound (gunfire reports but no explosions, no footsteps, etc...) in the game.