pacmd list-sources
pactl load-module module-null-sink sink_name=combined-sink
pactl load-module module-loopback source=alsa_input.usb-C-Media_Electronics_Inc._USB_PnP_Sound_Device-00.mono-fallback sink=combined-sink
pactl load-module module-loopback source=bluez_source.B5_9D_C9_3D_1F_F0.a2dp_source sink=combined-sink