Well, I am not sure, but it seems as i have found a bug in Ahi. I discovered it, when i tried the 3d sound enabler and switched of my hardeware 3D.
Suddenly there was the right audio channel missing for some apps. After some research, i found out that this was true for all apps using a normal Stereo mode without ++.
I solved it using a hifi ++ mode now, but I guess this is not as it was meant ;)