New volume option, hdmi-cec

It would be really nice to be able to have an option for volume setting with hdmi-cec since the rpi has this possibility. It would integrate well to use with an I2S-DAC and an AV -receiver.
Embedded hi-fi music player
https://www.runeaudio.com/forum/
https://www.runeaudio.com/forum/new-volume-option-hdmi-cec-t146.html