Door logic has been recoded. But we'll look into it.
Braking is now down to just using datarefs, which means V key for Park brakes and B key for foot brakes. We're looking into commands. The Power levers should work with a regular axis. Nothing was actually changed in that. Have you tried re-assigning an axis?
Not aware of this one, and no else has reported this. I just double checked on my system, and sounds are working fine. Perhaps try a reinstall?