This will give you access to the older sound control panel screens. I needed this as I was trying to access the ‘Listen’ mode on a capture card/line in device, and couldn’t find any other way of doing this in Windows 11.

To access the old ‘Sound’ control panel screen in Windows 11:

Enter the following: “rundll32.exe shell32.dll,Control_RunDLL mmsys.cpl,,0”

You can now access the Recording Tab, and set listen mode on your Capture Card.