I have recently had some fun setting up a Raspberry Pi-based music player – in fact it took me longer than I was expecting: it took a while to find a music player that I was happy with, and I also found that the tags in my iTunes-based music collection weren’t understood by the Linux-based music playing software.
I looked at Volumio, moOde audio player and Rune Audio. They all have Music Player Daemon (MPD) at their core, but with different front-ends for controlling MPD. I have been really impressed with Rune Audio – you can find a link to the latest version of the software at https://www.runeaudio.com/forum/runeaudio-r-e3-t7014.html
I’ll write more about this soon…