I us windows vista 64 bit. It has an IDT(intergrated device technology) program called audio manager where you control the settings; change the device output, altersound output etc.

Thanks for the reply.

MoonW5.3's
MoonP7 Pre
Moon300D DAC
Marantz AV8003
HSUVTF3 MK3 Sub
Axiom LFR 1100
AxiomVP180