These work for me (season to taste):
$ mpv --audio-device=pulse/alsa_output.pci-0000_00_1f.3.analog-stereo
File.mkv # desktop speakers
$ mpv --audio-device=pulse/alsa_output.pci-0000_01_00.1.hdmi-stereo
File.mkv # HDMI TV speakers
mpv --audio-device=help should give a comprehensive list of all
available devices.
HTH
Rinaldi
--
Critic, n.:
A person who boasts himself hard to please because nobody tries
to please him. -- Ambrose Bierce, "The Devil's Dictionary"