Mapio 2 is a great projection- and pixel mapping software by the Visution team, which supports Syphon - you can even use multiple Syphon inputs for multiple slices, which makes this application really useful. Watch this really short tutorial about how to use the Syphon outputs of CoGe in Mapio 2, then see the notes below:
Notes:
Every layer and the Master Mixer has it's own Syphon output, managed automatically
Enjoy! :)