It sounds like you need to set up
your Midi Devices.
Heres what you do
Go to Options then Midi Devices
you should see Midiman 2x2 (twice)
on the Input and twice on the Output
Devices...select them then click on
Move the selected devices to the top
(i think thats what it says..bare with me
because im not physically looking at Cakewalk
at the moment)
Once you do this.. cakewalk will say something
like these changes will not be made until you
exit and reenter cakewalk..You would then
close out and Reopen..
If you didn't see Midiman twice in the Input
Output device...you wil have to reload the
drivers a second time..which is part of the
initial install anyway..
If you are already to this point, let me
know and I will take you to the next
steps for recording and playing back
Midi thru your external synths...
One more thing..make sure on your Usb
interace you have Usb selected and not
Thru...that one has burned me a couple of
times...