Questions About Audio & Sound Track.

[nIGhTSoN]

Hello guys.
I have a problem with the sound. The engine volume is low and I can't hear characters voice when I'm on AL driver setting. If I switch to DS everything is fine except the engine sound, when acceleration increase, sounds bad, like 2 wave sounds, low and then high. I think it has to do with my sound card which is E-MU 0404 USB, has 4 outs, 2 analog and 2 digital and I'm only using the analog ones. I think that when I'm setting to AL, the game sends sound to all 4 outs not only to my main 2 outs.
Is there a way to fix this to make the game send only to my main 2 outs?