Using Stereo Mix without speakers

[Kuraishi]

I have found that in order to use the "Stereo Mix" recording option, I have to have my speakers set as the default playback device. I have a USB headset that I use and I was wondering if there was a way to set that as my default playback device and still have my Stereo Mix pick up sound?

 

[stormy13]

Unless the USB headset has its own control panel similar to the Realtek or Creative ones, then no as a USB headset in no way uses the drivers or features of a sound card.