After carefully reading the manual on portable media (i.e. USB stick) I formatted my USB stick with several short films in media type files that are supposed to be recognized (MP4, m4v, etc) but they don't appear in tthe queu. Music files like MP# appear, but none of the movie files. Am I doing something wrong? I formatted the stick in FAT which is supposed to work, and since the audio files appear the formatting must be correct, but why don't the video files appear?