Other apps can't directly use AudioRelay as a source. We'll have to create a virtual audio device.
AudioRelay will send sound to this virtual audio device and other apps will listen to it as if it was a real microphone.
These are the same instructions as the temporary method, but the virtual audio device will persist between reboots.
/etc/pulse/default.pa# Creates a device where AudioRelay can stream audio into
load-module module-null-sink sink_name=audiorelay-virtual-mic-sink sink_properties=device.description=Virtual-Mic-Sink
# Creates a device usable by communications apps (e.g: skype)
load-module module-remap-source master=audiorelay-virtual-mic-sink.monitor source_name=audiorelay-virtual-mic-sink source_properties=device.description=Virtual-Mic
pulseaudio -k to make PulseAudio reload the file.After a restart, the virtual device will disappear. You can follow these instructions to test AudioRelay.
It creates a device where AudioRelay can stream audio into.
pactl load-module module-null-sink \
sink_name=audiorelay-virtual-mic-sink \
sink_properties=device.description=Virtual-Mic-Sink
It creates a device usable by communications apps (e.g: skype). (It simply renames the Monitor of the previous device)
pactl load-module module-remap-source \
master=audiorelay-virtual-mic-sink.monitor \
source_name=audiorelay-virtual-mic-sink \
source_properties=device.description=Virtual-Mic
What it should look like

Typing pulseaudio -k reloads PulseAudio and remove the temporary devices.
What the result should look like in Volume control / pavucontrol
(Installed via sudo apt install pavucontrol)




