Hi Brian,
I'm sorry on Microsoft's behalf about this user interface, it will be replaced in a future update as it is the cause of endless confusion.
Please make sure you click the highlighted blue 'Speakers' text on the dropdown to select the device.
Jason
Hi Brian,
The Microphone Mix plugin (which I presume you mean) is designed to be used by users who do not have a desk to plug and XLR microphone into. If you have a deck you should take the output of the desk and use this to broadcast.
Hi Brian,
Please check your Live Assist settings (even if you aren't using them). You need to set the players there also.
Jason
Brian Mitchell