Edited filetypes.php

Added

	//Jarrod's Code
	'm4v' => array(
		'name' => 'iTunes Video File',
		'icon' => 'video.png',
		'content-type' => 'video/iTunes Video File',
	),
	'mp4' => array(
		'name' => 'iTunes Video File',
		'icon' => 'video.png',
		'content-type' => 'video/iTunes Video File',
 	),