I posted earlier that the modded NvMixer does not start when using nVidia audio driver 4.60.
Now I reinstalled audio drivers 4.57 and the modded NvMixer starts flawlessly.
Since version 4.60 drivers are aimed at Nforce4 anyway, not for NForce2, that's something I can live with!
Are you going to write a short documentation that tells us what all these extra settings do anyway? Would be quite nice!
