I know this is the Roon forum but I’m glad that JRiver hasn’t totally vanished into obscurity. I upgraded to 33 a while back and realized I had been using them 15+ years. That’s an insane longevity for software. I will admit that I do not use it’s library features anymore. That’s not to say it’s not great at that, because as some of you ‘nerds’ have pointed out, it’s customizable to your hearts content, just it’s maybe a bit ‘too’ hands on for many users.
I feel like JRiver doesn’t really step on Roon’s toes, they have starkly different philosophies and user experiences.
Nowadays as I said, all JRiver does is present video (the video library stuff is handled elsewhere, the JRiver renderers just get told what to play). I’d actually love if they provided a stripped down, playback only client for this but alas.
Anyways, OP should definitely look at JRiver but I feel as though it’s understandable if it’s not what he’s after.