I presently have no audio from the N2 Headphone Jack, is there something I must do to activate it? Is it possible to have both the Headphone and HDMI active at the same time?
You have to change the Audio Output device in this location: Settings\System\Audio\Audio output device.
I use both the HDMI and Headphone jack for 2 purposes and use the Audio Profiles add-on to make the switch easy, mapped to a key on my keyboard.
Which of the actual settings is that? I have tried all the settings including restarting Kodi each time and get nothing on the headphone jack and sound on HDMI continue. In Android it does work and sound goes to both HDMI and the headphone jack in parallel