well, the mbox is there. but i believe it's there as a usb interface. i have spdif selected as the optical format for the 003, and i have spdif selected as the clock source for the mbox. i'm not sure if that's how i should have it.
in the I/O setup, it just shows the 003. my spdif paths show up as inactive, but i really don't know anything at all about spdif or how i should have this set up, or even if the way to do it would be through spdif.
it seems that you can only have one active interface, right? so even if i am able to get the mbox inputs working via spdif, i won't have any of the playback on the mbox.
i'll call digidesign in the morning. i was just seeing if anyone had a quick answer over the weekend.