NoMachine sound forwarding doesn't work any longer on macOS 12.

When user connects to NoMachine server on macOS 12, sound is neither muted on server nor forwarded to client.

Problem was reproduced on macOS 12.0.1 with NoMachine v. 7.7.4.

As a possible workaround, run the following commands from a terminal to remove/add manually the audio driver:

sudo rm -rf /Library/Extensions/nxaudio.kext /Library/Audio/Plug-Ins/HAL/NMAudio.driver /Library/Audio/Plug-Ins/HAL/NMAudioMic.driver
sudo mkdir -p /Library/Audio/Plug-Ins/HAL/

sudo cp -a /Applications/NoMachine.app/Contents/Frameworks/bin/drivers/NMAudio.driver    /Library/Audio/Plug-Ins/HAL/NMAudio.driver
sudo cp -a /Applications/NoMachine.app/Contents/Frameworks/bin/drivers/NMAudioMic.driver /Library/Audio/Plug-Ins/HAL/NMAudioMic.driver

sudo chmod -R 755 /Library/Audio/Plug-Ins/HAL/NMAudio*
sudo chown -R "root:wheel" /Library/Audio/Plug-Ins/HAL/NMAudio*
 
sudo launchctl stop com.apple.audio.coreaudiod
sudo launchctl start com.apple.audio.coreaudiod