Using REWIRE with Sibelius
I've been trying to use Sibelius with REWIRE, and keeping running into problems. My goal is to be able to have REAPER host my sounds (whether that be a backing track I'm composing to, or the Sibelius instrument sounds, as they sound much better using a sampler in REAPER instead of General MIDI, and it's less resource intensive than Note Performer). I want to be able to playback from either software and have them synced up.
I managed to get REWIRE working for the sounds (I wrote up my method as a tutorial here mostly for my own reference : https://adriandelima.github.io/posts/using-rewire-with-reaper-and-sibelius/ but basically it's using Macos' built in virtual midi cable, and creating a custom playback config in Sibelius, and routing everything through Sibelius' mixer. Far too complicated, but once setup it seems to work ok).
The problem I'm having now, is getting playback synced, which in theory should be the simplest thing. If I press play from REAPER, everything plays back in time. If I playback from Sibelius, there's a 1 beat delay with the Sibelius sound, so my score get's out of sync with my backing track. I'm working in Sibelius, so I need to be able to playback from there, can't be swapping programmes every time I want to hear something. Is there any work around for this?