[Sonic Blue Meanie]

I am upgrading my interface from an mbox2 to a Digi 002 rack. I have basically mirrored the hook up. Monitor Out L&R, FireWire into iMac from 002 port. When I play audio from iTunes, I hear it from the built-in iMac speakers only. No sound from headphone jack on 002 rack either. What configuring do I need to do to make the 002 jump in and replace the mbox2?

OS X
Snow Leopard upgrade