I was using Radium on OS X Mojave. When I upgraded to Catalina, it stopped working. Unfortunately, it appears that the developer has stopped working on it.
Is there a way to get this working?
I had the same problem, I wouldn't expect a new version since its pretty clear Radium is not being maintained. I'm using OneRadio now, not exactly the same, but still pretty good/similar to Radium imo.