Can't record with Stereo Mix while using headphones

[Broodyr]

So, I've been trying to get Stereo Mix to work the past few days to record my system's sound and my microphone's. I've noticed that, if I have my speakers set as the default playback device, then Stereo Mix works, but if I set my headphones as the default playback device, it doesn't work. My headphones (Plantronics Gamecom 777) connect via a USB. It also has it's own sound card built in, so I figure that may also be the problem. I have Realtek High Definition Audio drivers.

 

[fireberd]

Looks to me like the problem is the USB headset system. You can only have one default Playback device, either your "speakers" (actually your RealTek) or the USB Headset (or possibily HDMI if you have that). Thus you are going to have to use standard headset to do what you want.

 

[carwiz]

Open the Realtek HD Audio Manager from the task bar. Click on the blue "Device advanced settings" in the upper right corner (above the jack display). You can set the jacks to be independent. There's also an option to turn-off speakers when headphones are pluged in. You probably want this opton turned off.