Ok, I do have STP and also have Logic Pro. I have used Logic in the past to make my own music, but never for 5.1.
So in my research it seems like I need to setup a virtualized 5.1 in Sys Prefs as a new Midi Configuration. I also found the following items that seem like pretty good and inexpensive route to go:
Focusrite Saffire 24 Firewire