Is DR Davinci Resolve?
Are your using the Delivery tab?
Is it possible the audio export box is not checked? See step 2 here, starting with “Below these two options are three rectangles labeled: Video, Audio, and File.”  https://www.simonsaysai.com/blog/how-to-export-video-from-davinci-resolve.

I once had a similar issue and that was the cause. Video was fine, but I had skipped exporting the audio. Checking that box helped fix it.

> On Dec 27, 2022, at 8:51 PM, charles meyer <[log in to unmask]> wrote:
> 
> My esteemed listmates,
> 
> I successfully edited and rendered a video in DR which was rewarding as
> this "new" desktop at work has a marginal graphics card.
> 
> I tied to listen to that .MP4 file but there's an X in the Volume Icon on
> the taskbar.
> 
> I then Opened Systems > Sound and then tried to uncheck the x in the
> Settings But it won't uncheck that X.
> 
> I then try to slide the volume slider to the right as so many Google
> results advise. Nothing happens.
> 
> Have you used W11 and if so how do you get the Mute button to unmute.
> 
> Thank you.
> 
> Charles.
> 
> Charles Meyer
> Charlotte County Public Library