recently installed avic z130 in wifes ml and have a couple questions.. first, the vss reads about twice the vehicles speed. tried the recalibration for the vss and still the same. is there any comon issues with vss reading. second, how do i play videos from itunes imported from handbrake thru the sd card do i need to change the format?..both of my computers are macs.. third, the pictures cant be read either. fourt, every song is doubled but only when the card is in the radio not when plugged into my either mac. i do have acess to a windows computer at work. not really sure how compatible the