MPD works great for non-tech-savvy friends over, you just need to install a web-based client and they can point their smartphone browser to it.
To make it even easier for friends and family, I set up a dynamic DNS with a friendly URL like myjukebox.duckdns.org that points to the 192.168.xxx.xxx address where this is hosted.
To make it even easier for friends and family, I set up a dynamic DNS with a friendly URL like myjukebox.duckdns.org that points to the 192.168.xxx.xxx address where this is hosted.
Mopidy (https://mopidy.com/) as the MPD server with Iris (https://mopidy.com/ext/iris/) as the client is a good setup for this.
Even the tech-illiterate can get along with it.