Do you hear the show with headphones plugged into the mixer and do the mixer flashing light sound meters work?
It appears to be a very fancy stereo mixer. So no multi-channel or complexities. I expect the Main Mix show to appear on the USB connection as a stereo signal. I do know of mixers that don’t work that way, but most do. I also expect the simple stereo drivers to work.
Now that I got your hopes up, I’m not a Windows elf. You appear to be doing everything correctly.
I brought up the number of knobs partly to be funny, but partly to point up the possibility that even if the analog services are working, it’s remotely possible there is a mixer setting that’s preventing USB sound.
I actually just got done watching a Youtube video and I think I may have found my problem. There very well may be a button that is pushed in that shouldn’t be, preventing the sound from the board to making it’s way to Audacity
The Behringer is a 2 in, 2 out USB inteface that is “USB audio class” compliant. That should work without any driver install on any recent Windows, but often doesn’t.
As all Behringer 2IO interfaces use the same driver, could you tell us if you have installed anything for the Behringer?
An ASIO4ALL driver that is supplied for when the USB audio class driver in Windows doesn’t work, can be found on the Behringer site. However, Audacity has no ASIO support, for reasons of license. Info:
The device “should” work without the ASIO4ALL drivers.
Have you checked in the Windows Sound Control Panel to ensure that (a) Windows can see the device and (b) when there is a signal going through the desk, it shows in the control panel recording meter?
Back in the Paleolithic, a Reputable Manufacturer made a mixing console that had routing controls after the sound meters. At least once a week, someone would flush a production into the toilet by setting the routing wrong by accident. We took the console apart and disabled the routing.