Brian Mavity

Greetings folks. Used to do this years ago with Audacity (yea, that long ago) I have Cakewalk and using Positive Grids Riff as an interface but I keep getting ASIO conflicts. I can't use both at the same time. Trying to use the Riff/Bias Fx2 as a standalone but I'm guessing I need to somehow open it up in Cakewalk. I do not know how to do this. Any help in the right direction? Thanks in advance