After my MacBookPro (MacOS 12.6.7) motherboard died, I'm re-installing my old programs.  I downloaded and installed JABB3 and the samples on my external SSD sample drive and all looked well.  I opened the Aria app and dragged the key card in-all good.  JABB sees and loads the samples, and I can hear them when playing through my internal speakers, but I'm having no luck getting the audio through my audio interface, a Metric Halo ULN-8.  I've tried both the Audio/MIDI setup utility and the System Prefs speaker settings to no avail.  The works for all the other software I own, but not JABB.  What am I missing?  Thanks,  Robert Cartwright