Ahhh, under the control panel does it have a Realtek audio controller? I had that same chipset on my old AMD64 rig, and I was able to set the type of room using that utility.

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-Justin

91 560 SEC AMG - other dogs dd
01 Honda S2000 - dogs dd
07 MB ML320 CDI - dd
16 Lexus IS250 - wifes dd

it's automatic.