NVDA And SPL Concern!

Thomas E Williamson, Senior

Is there a way that I can change SPL to factory default.
I was trying to broadcast on last night, I could not hear my music in my head phones.
Another tech connected to my computer, and changed things without telling me what he was checking or unchecking.
He also used a program called, audio repeater.
How can I change this, so that I can successfully use my mixer, which is, ag06?
I appreciate you.

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