Jeff, As I understand your predicament you're wanting to exchange
midi data between one hardware device, the Helicon Voicelive Extreme, and multiple software programs, the Voicelive Extreme editing software + Band-in-a-Box or RealBand, is that correct?
If you are willing to purchase a multi-client usb midi driver,
+++ Loop Be 30 +++ may suit your needs. That is the only solution I am aware of.