i tried to play music on my ps3 whilst driving but its not possible, only in Midnight cub : LA it is.
Anyways, one GT5 is released it would be nice to have the feature to listen to music if wanted, so some of us here can really pretend we would be the Stig
Otherwise, i also turned off the music during the race and replay, because i need and want to focus only on the race and car.
yesterday i was listening to some music on my headphones and i raced really bad. The reason was because i couldn't hear the engine to tell when to shift.