[Biganon]

Tip: zoom doesn't list pulseaudio monitors in the available sources, and trying to set zoom's input to anything manually from pavucontrol fails silently (even if zoom is set to "use system default" or whatever it's called).

The only way I found to stream audio to zoom is to use a pulseaudio module that lets you use a named pipe as a source. You can then output your sound to said named pipe, and set it as the microphone in zoom. The sound is pretty bad of course.

[pzmarzly]

Have you tried PulseAudio's module-virtual-source? https://news.ycombinator.com/item?id=22754216

[sitkack]

Are there any "virtual usb" devices, something like a software usb gadgets to emulate a webcam so that software will have to special knowledge of these alternative sources?