Dove into Volumio players a couple of weeks ago. I now have three. I’m playing flac files and Spotify, no high resolution files.
1 - Synology NAS > Mini86 > Audioquest DragonFly Black > Preamp
2 - - Synology NAS > Allo Boss Player > Preamp
3 - Synology NAS > Raspberry Pi 3 w/Pi touchscreen > HRT Music Streamer III > Preamp
It’s all working pretty well, including the Volumio android app. I am having some issues with my Spotify playlists on players 2 and 3.
In my judgment, the Allo Boss Player is real value for money - 109 USD at Allo.com + 25 dollars for really quick shipping from Bangalore.
My thanks to all the developers here. Cheers.