rFactor2 doesn't show up in Volume Mixer

I'm not sure if this is rF2 or Windows (7, 64-bit) related problem, but rFactor2.exe doesn't show up in my volume mixer (right click on the sound icon in taskbar > volume mixer). This is a real pain as I sometimes swap between speakers and headphones, and sometimes listen to music while driving and use something like Mumble for voice communication.

 

It shows up for me with a HT Omega eClaro on Windows 7, 64-bit.

 

Shows up for me as well, using crap onboard VIA VT1708S, W7 64bit

 

And me, onboard Nvidea W7 64

 

Be sure to set the right sound card/output as "default device" in the windows control panel.
If rF2 uses a non default device, then you will not able to see the icon on the mixer.

 

Thank you, that did the trick. The default was set to speakers while I was using S/PDIF.