https://github.com/gotbletu/shownotes/blob/master/pulseaudio_change_playback_output.md

pulseaudio-cli-commands.txt

pa-list() { pacmd list-sinks | awk '/index/ || /name:/' ;}
pa-set() { 
	# list all apps in playback tab (ex: cmus, mplayer, vlc)
	inputs=($(pacmd list-sink-inputs | awk '/index/ {print $2}')) 
	# set the default output device
	pacmd set-default-sink $1 &> /dev/null
	# apply the changes to all running apps to use the new output device
	for i in ${inputs[*]}; do pacmd move-sink-input $i $1 &> /dev/null; done
}
pa-playbacklist() { 
	# list individual apps
	echo "==============="
	echo "Running Apps"
	pacmd list-sink-inputs | awk '/index/ || /application.name /'

	# list all sound device
	echo "==============="
	echo "Sound Devices"
	pacmd list-sinks | awk '/index/ || /name:/'
}
pa-playbackset() { 
	# set the default output device
	pacmd set-default-sink "$2" &> /dev/null
	# apply changes to one running app to use the new output device
	pacmd move-sink-input "$1" "$2" &> /dev/null
}