HDMI Output no audio

[Tim Curtis]

Multichannel passthrough is supported. There was one other user that was doing it but had to add the param below to /boot/config.txt. This param is already in moOde 6.7.1 so I'm not sure why its not working for you.

# Pretend all audio formats are supported by display, allowing passthrough of DTS/AC3 even when not reported as supported.
hdmi_force_edid_audio=1

Edit your OP (posts #1) and mark it as SOLVED.