I know its not your car so you probably dont care, but heres a little bit of info on the audi multitronic box:
Drive is by means of a multi link metal chain, not the more usual rubber belt found in most CVT gearboxes, and it has no torque converter. Instead there are 2 wet multiplate clutches, one for forward and one reverse, which are hydraulically activated. Audi intended these to last the life of the car, but depending on how you drive, they can wear out in as little as 30 - 50k miles. It is possible to strip the gearbox and change these, just like a normal clutch, but here's where it gets interesting;
As the clutch plates wear the electronics compensate for the thinner clutch plate, but when they are replaced you cannot reset the electronics to allow for the new, thicker, plates. The only way to get the box working again is to fit a new gearbox ECU, costing about £2000 on top of the cost of stripping the gearbox. Audi charge around £4500 for the complete job, or around £3000 from an independant specialist.
However, if you drive a US spec Audi, due to the American freedom of information act the software for the gearbox ECU has to be made available, therefore Audi made 2 versions of the software, one for the US market and one for the rest of the world and they are not interchangable.
Bet you're glad its not your car now!