Great beta so far, loving it!
While testing some new rigs I thought to myself: Wouldn't it be nice to trigger a DI file in the Rig Manager to hear the actual preset via the KPA?
My KPA is connected via SPDIF to my PC so if the computer plays a sound file I can hear it being amplified by the Kemper. Instead of playing guitar I would use the Rig Manager to do the job for me. Yeah, I know that I'm lazy but when organising rigs I sometimes don't want/have/need my guitar around
This would require one of two things:
a) The Kemper's USB connection working as an audio interface, which we've been told isn't going to happen.
b) The Rig Manager using your audio interface itself. Interfaces will typically only let one program use them at a time, so you wouldn't be able to use your DAW at the same time.
I'm thinking your current method (DAW open, playing a loop, use the Rig Manager to audition) is the best bet.