I have now noticed with Fre:ac v1.1.3 that I now do not get the Core Audio option at all, even with the AppImage. I have Apple Application Support (v.8.6) installed in Wine. Do I need to do anything else to get this working again in v1.1.3?
I thought with Flatpak you could configure the sandbox to allow file system access?: https://docs.flatpak.org/en/latest/sandbox-permissions-reference.html
Apple Core Audio / QAAC in Linux Flatpak not detected