Back to the question about needing to reset before re-running Audyssey? No, it resets the parameters itself. Wouldn't hurt, tho, but you might lose other settings you have elsewhere in the avr. Congrats on the successful re-running
I'd definitely use the app if it were available for my older Denon....like Pogre, you could always ask for your money back. I do think it odd they just didn't include it in the price of the unit, but I suppose every $20 they can save on list price....