I didn’t have this in mind when I started cantabile-media-server, but during the development it became apparent it could work as a solution for this - partly because the media server works so much better than I expected.
In fact, I’ve already prototyped using the media server as a way to view and control pdf files (with mixed success, but believe I have a way to make it work).
Back in June I posted some thoughts about completely reworking show notes - see here. Originally I was planning on implementing this directly in Cantabile, but I’m now seriously leaning towards moving this into the media server - it gives lots of advantages, not least of which is multi-monitor show notes, remote show notes, different show notes per band member, pdf support and more…
If you just want to show static image show notes, the current media server will work for this. For MIDI controlled scrollable content, that’s still to come (hopefully).