I think I hear two as well... I can hear the car take off, upshift with a little crackle which sounds normal, then start going crack crack crack which stops as the car upshifts again, then it goes crack crack crack again... Is that what you're getting?

 

When it shifts are you lifting your foot, or keeping it buried? It sounds like it shifts, you let off the gas - causing the crackles and pops - and then you get back into it. If you have your foot down the whole time then I would think you have a fueling issue of some kind - something is causing unburnt fuel to get into the exhaust, perhaps. What happens when you shift with the paddles? Maybe it is a throttle position sensor fault? Once it gets past a certain point in it's travel, it gets confused? That's all the wild guesses I can think of - hopefully someone smarter will chime in!