music server questions.

Hello. I'm considering some type of music server device. I have no experience with such things, and searching so far has not brought me much understanding. I want to use it into an RME ADI-2 DAC via usb.
Here is what I want:

A good amount of local storage for wave files. 
Ability to play files from a memory stick. 
Ability to play audio from the internet, Youtube etc.
Remote control from Android phone and tablet.

Here is what I don't want:

Onboard dac
hires streaming or any subscription plans.
roon
apple products.

What should I be considering? Any advice appreciated.