There is no audio on that layer. Double check the file in the project panel and look at the info.
Hey Rick thanks for your prompt reply. I can confirm the linked MP4 has audio and this is the same for any layer that is video or audio. I can see the Waveform so there is audio, but I can't adjust the audio level on the layer. I used to be able to see a little slider that allowed me to changed the audio -48 to 48+ but it has disappeared. I wonder if there is a quick preference fix to get it back? I'm at a loss. Cheers
You have hidden the modes / switches column in the timeline. None of the values are visible. Fix it by right clicking in the column bar at the top and select Switches or modes. You could also just press F4 or toggle the switches/modes column with the timeline column icons at the bottom of the timeline. You might also be able to just reset your workspace.
Also, the layer you are showing has no audio...
If you check the file in the project panel you should not see an indication of audio.
Did Rick's response help you out? Let us know.