Create a pulseaudio rtp stream

pulseaudio-server.sh

#!/bin/bash

# Create a pulseaudio rtp stream
# Run a script, then set <rtpcombine> as your default stream, then connect to it from other device

# check if combined sink already exists
pacmd list-sinks | grep -Fq 'name: <rtpcombine>' && echo "Combined stream already exists" && exit 0

# load rtp modules
pactl load-module module-null-sink sink_name=rtp format=s16be channels=2 rate=44100 sink_properties="device.description='RTP Multicast Sink'"
pactl load-module module-rtp-send source=rtp.monitor

# combine all sinks into one
all_sinks=`pacmd list-sinks | grep name: | awk '{print $2}' | cut -c 2- | sed 's/>$//' | paste -sd "," -`
pactl load-module module-combine-sink sink_name=rtpcombine slaves=$all_sinks