Volumio is a really cool open source audio player project, meant for high quality playback and easy use with cheap devices. Basically, a plug-and-play network music appliance. I have a few already around the house – a Pi Zero W in the kitchen for streaming radio, a Pi 3 with nice DAC hooked up to the stereo for lossless file playing. At it’s base it is controllable by the standard mpd server, which allows it to be integrated into other audio solutions or controlled by software like Home Assistant.
I wanted to add a network controllable speaker to my NUC server, and it made sense to stick with Volumio. Here’s the steps for installing in a Proxmox virtual machine.