When you right-click on a .mp4 file, click Properties, and click the Change button, iTunes may not be listed in the Open With dialog. It may not be listed in the Open With submenu as well.Read more
When you right-click on a .mp4 file, click Properties, and click the Change button, iTunes may not be listed in the Open With dialog. It may not be listed in the Open With submenu as well.Read more