Usage:	--list | --list-input | --list-output | --set-input=ID | --set-output=ID
	--list          : Shows all audio devices.
	--list-input    : Shows input audio devices.
	--list-output   : Shows output audio devices.
	--set-input=ID  : Sets the default input to given ID.
	--set-output=ID : Sets the default outputz to given ID.