Thank you jonas. The double-clicking to star my favourite playlists did the trick.
But I still cannot save preferences. I closed and re-opened the app earlier this evening after changing my preferences, and they are still not saved.
Hello. Just discovered this wonderful app. Thank you.
Two glitches you may want to be aware of.
First, on a Mac, in Catalina, preferences are not saved. For example, though I have checked under the Behaviour tab "Keep running in the background when window is closed," the next time I close and re-open the Strawberry app it does not remember my saved preferences. That's just one example. The same thing occurs with other preferences that I have saved.
Second, unless I do not understand how to save playlists, I am unable to "favourite" playlists. When I check the star icon next to the playlist name, nothing happens.
Again, thank you for your efforts.