Handcrafted from the best C commands, new MIDI controller plug-in for SONAR is available for testing.
AZ Controller is my attempt to make a generic plug-in with arbitrary logic support.
The plug-in, complete documentation and everything I know and think about the topic can be found on my site:
www.azslow.com Update for 9.7.2014: current version can do EVERYTHING original ACT MIDI can and much more. I have implemented near all possible operations for "simple" (not Mackie) controllers and also some functions you can not find in any other plug-in (for example, non linear response curves, instant/endless control for standard knobs, direct (not ACT) control for all parameters). On my site you can also find: "ACT MIDI Explained" - detailed explanation of the original plug-in and step-by-step instructions how to emulate it with my own, general ACT explanation, some words about Control Surface (hardware) types and parameters, etc.
P.S. Current version is an early alpha quality release. Please do not install it just prior the most important session of your life...