I’m running Roon ROCK with a Qobuz and Tidal subscription. I wanted to play around with the DNS sinkhole Pi-hole on a Raspberry Pi to block unwanted ads and tracking. Pi-hole is very easy to setup and I used the default configuration. Everything seemed to work well and I was blocking ads and tracking but then when I tried to play audio from Qobuz, Roon just hung and would not play. I also noticed that email from Qobuz had much of it blocked out. Tidal still worked as did local files. I turned off Pi-hole and immediately Qobuz worked again. My Qobuz email displayed properly.
I take this to be a pretty good indication that Qobuz is using something that is blocked by default by Pi-hole. I did not track it down yet. There is likely some site that needs to be whitelisted in order for Qobuz to function properly. Or, maybe better, Qobuz should not be using sites that are blacklisted by a popular DNS sinkhole.
Anyway, thought folks might want to know. I no longer use Pi-hole so I am not experiencing a problem. Also, this is not meant to be a criticism of Pi-hole, that seems to be a pretty cool project. It’s more a criticism of Qobuz.