Starting from Scratch with distributed music system (Sonos?)

Hi

My father in law has a holiday house and he has asked me to replace his old traditional CD music system.

He likes the Sonos system that I have at home but the catches are that he doesnt have a computer or a phone at his holiday house.

He has also given me a couple of hundred CD's and asked me to do something smart with them so it's easy for him to listen to them.

I'm thinking getting the CD's copied to a harddrive but then I get stuck. How to a build something for him that makes it easy to find and listen to the CD he wants to?

I could provide a tablet to use as his access but what application would I use on it? I can't see how iTunes would work with out a computer

I'd love some advice please on how to set this up and what to buy

Many thanks

Verdon