I have a P800 personally and a P900 at work, when I send a clip from the Sony to my 3650 (such as the office, children in need episode or a Kylie Video) the clip plays perfectly except there is no sound.

Some clips will say 'not recognised' or something like that, I am positive it is something to with the stereo output on the P8/900.

Anybody have an idea of how to solve this or any program that can play these MP4's, or is it simply a case that 3650 hardware is not capable of playing them?