I like to work and watch movies in iTunes at the same time. Recently, however, iTunes has just started to pause randomly during playback. It is not a freezing issue - it is like somebody hit the pause button. Sometimes it will pause about five seconds after I have hit the play button. It is driving me mad! I have not done anything to my system that could possibly cause this.
I am on OS X Mountain Lion. This problem started on iTunes 10, so I upgraded to iTunes 11. It is far worse on 11. I have resorted to watching stuff on Quicktime Player, but I have to search for the videos in the Finder before I can play them. This happens with all of my videos, music, podcasts, et cetera.