Can anyone tell me how to get audio to output via HDMI, if this is even possible? I am using a KVM switch and audio is sent to my speakers via HDMI for the other all the other connected devices devices connected (Windows PC / Raspberry Pi / MiSTer). I can't find a way to get audio to output through the HDMI port.

(PS Unrelated - is there a way to search only this thread on this forum? I can't figure out how to do it.)