On the Avid website it says that you can connect an MBox 3 to your computer for recording voice overs etc. but for some reason the MC6 software doesn't see the hardware connected. On the website it also says: "Please note that video hardware must be disabled/disconnected when using an audio interface."
Am I supposed to throw out my Decklink card so I can make use of my audio interface?!?
I'm not 100% sure, but I believe if the Decklink card is present, the audio I/O has to go through the Decklink card when in the Avid software. This is probably to assure correct sync and sample rates.
I have a Decklink and Mbox2 Mini on my system. The Mbox2 is only used as a core audio device. All the other apps are OK with it. I did have to re-install its drivers after I installed the Avid MC software. I'm not absolutely sure if this problem is also related to Lion and 64-bit. In any case, I can use the Mbox with other apps, but need to use the Decklink with Avid.
Is there a problem with simply using both? Do you have a small mixer in your system? You might need to add this so you can select the outputs between either the Mbox or the Decklink.