To enable the option of using a microphone alone, or in conjunction with an audio source at the same time:
Please note: Using audio commentary only works via accessing the cam via https, not http
1-Select the button to enable the Audio mixer/Secondary audio settings.
2- Select the Microphone option and then select the appropriate microphone from the drop down list.
3- Select the Master background audio settings if you wish to add background audio as well, if not select none from the drop down list....balance out the volume sliders to your preference
4- Put the audio mixer to the on mode