Oh and to use the monoprice app you need to purchase a device that provides intranet access. Global Cache Flex-IP iTech Flex IP Module. I purchased the wired version.
https://www.amazon.com/Global-Cache-iTach-Flex-IP/dp/B00C6FRPIC
This person has many good videos including this one which you might consider - https://youtu.be/VMUl4TANpmw
Since this amp has internet access it adds some new functionality (i.e. no need for the Global Cache device) and also has some streaming services built-in.