pactl set-card-profile bluez_card.7C_89_56_4C_BD_1B a2dp_source
pactl list short sinks
pactl list short sources
pactl load-module module-loopback source=bluez_source.7C_89_56_4C_BD_1B.a2dp_source sink=alsa_output.platform-bcm2835_audio.analog-stereo
pactl list short sinks
pactl set-sink-volume 0 50%