Tweaking volume control to preserve previous setting when parameters are changed

1. Allow orbit to go more slowly.

Shared data between au3 hosts.

1. Fix mixdown in Cubasis.

1. Fix LR lock error.
2. Reduce back head filter strength.

1. Fix Auria Pro / Cubasis mix down.
2. Add Mono Input mode.

1. Sound improvement.
2. Fix crash bug when receiving midi cc.

1. Make the app run in older IOS version.