I am not an expert. But, like when plug in an external to the back of mine...I do not use a NAS for music...I use the AMM to manage or my IOS App.
Goof around with it. The Aurender as I am learning is extremely flexible...built to high standards and requires so minimal effort to enjoy. It's nearly plug and play.
You know who to chat up,
j3brow [Jason]. He can help and the Aurender support is very nice.
BTW: I bought an iPad Pro for my Aurender, I like the visual realestate when working with the APP.