I agree that my earlier comment isn't the best way, just an easy way. I would agree that a usb or firewire sound interface is a better way to go. Depending on what you buy, you can have very many outputs from q lab to the board.
If the board is the presonus studio live AI board then yes it has firewire ports on the back. However in my smartphone research, I have only found that those ports are recording only. Could be wrong just haven't had the chance to look it up on an actual computer.