Add support for setting the sound_mode to https://github.com/home-assistant/core/blob/2ee2f85574885b684fe638add25428026f2313e1/homeassistant/components/anthemav/media_player.py. This is already supported by anthemav.
Add support for setting the sound_mode to https://github.com/home-assistant/core/blob/2ee2f85574885b684fe638add25428026f2313e1/homeassistant/components/anthemav/media_player.py. This is already supported by anthemav.