If you were using it before this, it should be (almost) ready to use again in SPlat...
I found that my Studiomix setup was right where it should be next to my Markus control setup.
All I had to do was edit it to allow for the different midi port system I have now... (Just I/o needed to be selected)
I created the entry back when the Studiomix was released and it has migrated to every Sonar release since.
Last night I did a vocal session by myself using the Studiomix for transport control and my iPad for wireless visual of the screen... I was in the studio, not the control room...
Note that I do keep the faders disabled as the jitter drives me nuts and it's too hard to remember and reset all the faders every time I need to save! ;-)
If you need the setup particulars, I can probably find them. It has been near a decade since I last looked for/at that! ;-)
Keni