Suddenly I'm Getting No Audio Output Whatsoever

Have you checked the audio output settings on the console?

Go to settings,

select Display & Sound

select Audio Output

and there you will see a choice of either HDMI audio or optical audio.

Check to make sure HDMI audio is selected

As if it`s set to optical you will not get an audio output through the HDMI cable.

There are a few options to get audio output to RCA (red & white) speakers with the Xbox One.

- If your HDTV has an audio output port for external speakers, usually in the form of a 3.5mm jack or separate RCA outputs, you can configure your TV to disable the built-in speakers and output all audio to what's connected to that output.

- Xbox One has an optical port for digital audio output. Personally, that's how I get my audio going to my soundbar. If your speaker system has an optical port, you might be in luck.

- There are various, specialized adapters you can get online, like HDMI-in to HDMI-out (video) + RCA (audio).

Hope this helps!

Yes I understand that.

I think that there is more to it, I should have mentioned before. The setup is this. I'm connecting the Xbox to a cinema projector that only has a DVI connection not a HDMI connection. I'm also going through a box to extract the audio from the HDMI signal
to send it to the amps.

I'm going HDMI from the Xbox to the audio stripper box which then passes the PCM audio to the sound amps and outputs the video through HDMI which I have going into the projector using a HDMI to DVI cable.

The Xbox is displaying it's outputting DVI in the settings not HDMI. Is there a way to 'trick' the Xbox at all? I'm guessing there isn't. Also as it's stating it's outputting DVI I'm assuming it's not sending the audio too, which is why I'm not getting any
audio.

[quote user="Atropos0"]I'm trying to set up my Xbox to use HDMI and SPDIF at the same time. I don't want the audio to output through the HDMI, because then it just uses the monitor speakers. Is there any way to output audio through SPDIF while using HDMI?[/quote]

Turn the volume on the monitor to 0, as I do with my TV if I'm using the optical audio being output to my receiver. You can't disable the HDMI audio.

@varunahX that is pretty much what I'm seeing. I get an error code when trying to set the HDMI audio output to anything but Stereo.