Tried Volumio when problems with Roon were driving me to look elsewhere. Did the trial thing for a few days, and then dropped back to the free plan. Loading the software onto my quartet of PI4's with their HiFiBerry Dac2Pro hats was not as simple as I might have wished... but I did eventually get it up and running. Unfortunately, I had no luck getting multi-zone simultaneous playback from Tidal, which is the main reason for me to have a computer network audio system. Went back to Roon... switched my problematic Linux based server out for a Mock (Rock on unsupported hardware) solution, and haven't had a problem since. If multi-zone simultaneous playback is _not_ on your list of must haves, this might be the right solution for you. Didn't work for me, though.