@ArneBab
So you completed your task of creating a permissions system to use the microphone and speakers, but the part that would allow PulseAudio to actually stream to /dev/audio was not completed, is that right?
And now the Linux world has moved onto Pipewire for the audio system.
Well, I'll be optimistic. This is probably the sort of thing that, once more people are running the #Hurd on Real Iron, will get finished quickly.