This is a followup to this question. Since I’m not on the mailing list, maybe someone else can reply to that question with a link to this description.
What we want to achieve: record audio output of qube A in qube B.
All instructions should be executed in dom0.
sudo modprobe snd_aloop
pavucontrol, in the “Playback” tab, change the output for A to
Loopback Analog Stereo.
pavucontrol, in the “Recording” tab, change the source for B to
Monitor of Loopback Analog Stereo.
Attach the microphone to qube B via either the applet in the system tray or using
qvm-device micin the command line.
The audio output of A should now appear as the microphone input in B.