A question on this. I believe you can play back DVD's via the 7inch display with Tech Pack, but have no idea how this might work? Whilst I don't want to watch DVD's whilst driving, my kids would love it, and perhaps useful if sat in the car waiting to pick someone up etc. Anyone have any experience how it works? Assume its via the SD card, etc rather than the CD player itself. How to folk actually get DVD files onto an SD card in the first place, assume they are coded?