You'd think there would be no safety concerns in allowing video playback on the front monitor when you are parked, but in its infinite wisdom Land Rover North America (not sure about countries abroad) decided to actually omit a video cable between RSE system and front monitor to make absolutely sure you could not watch anything at all, whether you are parked or not, on the front touchscreen. It took them 2 years to come to their senses, but I think starting with MY08 production it is possible to view DVDs on the front monitor while parked - the image goes blank as the car starts rolling, which is they way the system should have behaved from day 1.
PS: Welcome to the forum!
PS: Welcome to the forum!