Streaming PulseAudio over RTP
With PulseAudio, we can send a RTP stream over multicast UDP. Here is the bash commands to setup a sink where anything sent to it gets broadcasted to the multicast address 220.127.116.11 at port 46416.
pacmd load-module module-null-sink sink_name=RTP pacmd update-sink-proplist RTP device.description=RTP pacmd load-module module-rtp-send \ source=RTP.monitor \ destination_ip=18.104.22.168 \ port=46416
pavucontrol, you can push the audio of any application to the RTP sink we just created.