the small remote controller which really helps. Then I mounted the Harddrive where the window suction cup thingies go, with a lot of padding around it. I dont have any problems. I do have a CD player also. It is a PITA to navigate sometimes. But it cant be beat on long trips I just put it on random and hit next if I dont like the song. 12 trip and never heard the same song twice! Nor changed a CD.