This thing has a serial port. Would it be possible to use this as an addon device for another head unit that I already have. If so would custom control be possible (with software) from the main head unit. I have and Alpine CVA-1005. Would it be possible with the current hardware(if you had the right software) to interface with the ai-net? I realize this ain't a high priority but would like to know if possible at all. Also is there a video out source of any kind. If this unit can be changed in the future to accomodate any encoding that may come along, why can't it also play mpeg movies?