Volumio is a free, open-source music player designed to unify all your music in one convenient place. In addition to offering its range of streaming boxes for purchase, Volumio also supports a variety of third-party devices.
The Volumio project is led by audiophiles and music enthusiasts who strive to ensure that Volumio and Volumio OS deliver the best sound quality possible. While their devices offer superior sound compared to a Raspberry Pi, it’s hard to beat the Pi’s affordability.
What is key here though is that most users do get a proper high fidelity add-on card for their Pi’s. There are also a number of additional plugins that extend the functionality. If you’re interested, it is worth watching a few videos on YouTube (or elsewhere) that show more of how the functionality works.
See https://www.howtogeek.com/free-your-music-from-the-cloud-with-volumio-pi/