Does anyone know how to hook up an iPad Pro with the PX560 so sounds from DAW apps will play through the speakers. I have a non-powered USB hub plugged in to the iPad but no sounds are playing through the speakers. What other cables or connectors do I need, and is there a USB all in one that would be best for this issue? It appears I may have to buy another USB Hub that is powered, has an audio line in and line out, but not sure, because I am very limited in understanding audio connections and interfaces. Thanks!