I want to do video chat, such that when I'm in a call, others can hear my voice coming from my Logitech G933 headset, AND a music playing app (foobar2000, which is like Windows Media Player) on my computer, or even a video I'm playing on YouTube (I use Chrome, normally). I'm sure there's probably a way, but I just haven't figured it out.

For video calls, I would use Zoom, Skype, HouseParty (Chrome Add-in) or Facebook Messenger.

I imagine it's a sort of Recording device, but I wouldn't know which one, nor how to set it up to listen to both things.

How would I accomplish this?