emusnes

A few questions How do you fast forward when using USB on this thing? I have some podcast that I want to jump ahead in and can only find play/pause, forward and back track. Can you set the home screen to default to the wallpaper not the screen that shows a little of everything? Can it be programmed to have the ac on inside circulation on start? I have to press the button every time I get in the car. (to prevent outside smells, etc, entering the vehicle) Thanks