AceRimmer
(Smoke me a kipper, I'll be back for breakfast!)
8
A short while ago the easy answer would have been some Raspberry Pi variant but prices and availability atm are just plain silly.
Maybe consider an iFi Zen Stream?
It had its teething troubles but appears to be pretty much sorted now.
There is a huge thread on just that on these forums if you feel the need to peruse it.