How do I prevent iTunes from opening when double-clicking mp4-files? I only found a way (open with - other...) to prevent certain files from opening. I rather want QuickTime to open when double clicking on mp4 files.
MacPro 2.8, Mac OS X (10.6.1), iTunes 9
Solved by Chris CA on May 22, 2010 10:39 PM
Open a Finder window with an MP4 file. Right click - open with. Select Other... In the window, tick *Always Open With* and select QuickTime Player.
I found this solution: right-click the file -> get info -> open with -> ... -> change all This uses the chosen application to open ALL documents like this one (not only the one which is defined to "open with...")