Like &sink, but selects the default audio output device
&audiooutputlets you set the default audio output device, based on its name.
Matches on "string contains", so a partial string of the device name is enough. Use lower case, with underscores replacing special characters or spaces.
If the parameter's value is left blank, it hides the option to change the output device, including under the settings cog.
You can change the audio output device dynamically via the settings menu.
In Version 22 of VDO.Ninja you can change the audio output device of each video feed individually via
Right-Click -> Audio Destinationon the video feed.