how to convert dvd's and blu rays to digital store them and play them back on your TV?

Your movies ( music ) are stored on the Zappitti NAS.
The NAS is connected to your network ( Ethernet )
The Zappitti media player in connecte to your network ( Ethernet )
The media player detects the NAS and all the movies ( music) in it.
Probably , Apple TV 4K would detect the NAS too.

Zappitti media player ( I think )
https://www.amazon.com/Zappiti-One-SE-4K-HDR/dp/B07DLWVYQX