For iTunes, iMove, iDVD and the other built in burning apps you will need patchburn for the burner to be used. But you should also get toast. It is a far more comprehensive program for burning DVDs.
And if I were you I would skip the Sony DVD burner and go the NEC 3550A. It is about the same price, maybe a buck or two cheaper if you look hard enough, and it is a far more popular drive because of its performance.