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When I'm watching a movie and I press the "play" button, iTunes 10 launches. How can I keep this from happening?

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This question was asked (in a Snow Leopard context) on super user: . Unfortunately, the problem seems to be quite difficult to solve cleanly... – Michael Ratanapintha Sep 19 '10 at 3:44
Is horrible :'(, I will check it, thanks – Abimael Sep 22 '10 at 0:50
up vote 7 down vote accepted

Just found this on Lifehacker. I think it's exactly what you're looking for. The post talks about a patch called MMFix, which changes the media control daemon to stop exactly this from happening. Apparently, it comes with a one-click installer.

And, if some reason you would like to remove the patch, just run the one-click installer again and the original rcd daemon will be restored.

(Works on OS X 10.7 Lion, too!)

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Sounds great, i will try it :-) – Abimael Oct 1 '10 at 19:03
Iuju, now all is perfect, thanks David – Abimael Oct 16 '10 at 17:57

MMFix hasn't been updated for Mountain Lion yet, but I did find this solution to work, run

launchctl unload -w /System/Library/LaunchAgents/

in the Terminal.

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Keep in mind though that this disables the functionality of the media keys in iTunes itself as well. – Saaru Lindestøkke Jan 19 '13 at 13:09
@BartArondson how to enable it back, with 'load' ? – user2113 Feb 26 '14 at 17:59
@user2113 Yes, probably. Although I don't know for sure. – Saaru Lindestøkke Feb 26 '14 at 18:04

iTunesPatch did the trick for me on OS X Yosemite.

Description from website:

The application will patch the Remote Control Daemon to prevent it from starting iTunes whenever you press the play button on the keyboard or an external remote control. This will only prevent iTunes from starting, all other functions (like play/pause while iTunes is running) will continue to work as before. The original file is backed up in case you would like to restore the original functionality.

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