It's not funny!!!
The RPI is the most confusing thing I've looked into. It needs to be paired to a smartphone/laptop/tablet running some software to get them to communicate, then if you don't sign up to a streaming service you need to set up a NAS to your AIFF/FLAC/MP3 files and play them over your internet.
Does the pi have to be physically connected to a router? The media!?
Gawd knows
If not, I read you have to then set up the WiFi by plugging in a keyboard (haven't got one) and plugging it into the TV and start writing Code (numbers and letters I think) the set up WiFi. This looks as much fun as peeling grapes. I'm no technophobe but Jesus it's madness.
Then you need to do the same to setup the software.
Seriously!!!!
I gave up reading the gumph and disassembled my turntable and tonearm, reassembled them and spent 68hours f@cking about with azimuth, which after the RPI thread felt like fun.
If there is a plug in and play option then I'd try it but the fact the advice is "wait for someone to set it up for you" it screams..... "When this updates and deletes an essential part of the code, you are screwed" to me.
The CXN is however a lot simpler BUT I have no idea if it's any good, how close to vinyl it get ("oh my god! Did he just say that!?") Or if I even have the interest to try. At £800 I'd rather buy a CDP and a DAC for £100 and be dissatisfied that way.