hey..., i was using Kazrog's Mbox and my laptop with Digital performer.. i played into Kazrog's Pod XT Live, the XT's output went into one of the Mbox inputs, my llive guitar input from the xt live was mixed in the Mbox with my backing tracks off DP on the laptop and the whole "mix" was sent out in stereo from the Mbox's 2 outputs directly into the inputs of two Laney combo amps that were on hand at the Caparison booth, making them a kind of makeshift PA. the combos were, of course, set totally clean.