I just took redelivery of my 545 (Sport Pkg, NAV, Comfort Seats, Premiun Sound) and I have no sound whatsover coming out of the speakers. Looking at the I-Drive everything seems to be working fine (radio stations are there, CD is playing tracks) but there is no sound at all. It was working when I originally took the delivery in Germany and now all of the sudden it doesn't work anymore.

Is there something simple that I can check or do I have to bring the car in?

This sound thing is really bugging me now :( Everything else seems to be working fine.

Thanks