I thought it was the emergency system they have built into the radios here for awhile. My old 5 series radio will turn up the volume and force you to listen to traffic reports. Speaking little to no German the reports mean nothing
On this one it switches to radio in the middle of songs... not often, but it is becoming annoying.
Anyway, my only other thought was maybe a certain error on read from the CD would throw it back into radio mode... very odd for sure.
Oh well, I need to go to the dealership and yell at them anyway, there's a small spot in the corner of my hood where you can see the paint missed covering the primer before the clearcoat layer. Should be fun dealing with it, since the warrenties are different here vs' the bumper to bumper back in the states.