Hello,
I think there are in fact a few questions here:
- QT: it's the software cross platform framework on which Synchron Player is based on (like other softwares like Dorico, Cubase, Sibelius, ...): currently at version 5, a beta version 6 juste came to life (20th October) and could possibly support macOS Big Sur: QT will support it, but no release date for now.
- CoreAudio: as Cyril Blanc said, the macOS audio API evolutions on Big Sur and/or ARM-based Macs could take time for developers to implement and be compatible with it
- Sound card: according to possible CoreAudio modifications, drivers should be updated and perhaps some sound cards won't be compatible
- eLicenser: this can also take time to make it usable on ARM based Macs
Regards,
Gil.