I am using Volumio for many years and I am really happy with it. I use it on three devices (Raspberry Pi 4 with Hifiberry DAC connected to amplifier and the Pi connected to LAN cable). With Volumio I listen to Spotify premium, Internet radio stations and my own music library from a Synology NAS. Volumio works perfectly for me, and I like the really nice browser-based user interface. Setup is easy. You just have to flash the SD card, power it up, open the user interface in a browser and do some basic configuration like selecting the DAC. Spotify setup is easy, too. You just install the plug-ins for Spotify and Spotify Connect and enter the account details. Spotify is actively maintained with frequent software updates. This is a big advantage compared to buying a Internet receiver box from some audio manufacturer where you rarely get updates after some years.