You can download the compressed patch at http://www.thebitguru.com/projects/iTunesPatch.
This is a patch for removing the default OS X behavior of always starting iTunes when the play button on the keyboard is pressed. This feature can be useful for a lot of users, but it can also be annoying if you are using VLC or other similar programs that support the media keys.
The Patch script 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.
Lastly, this program will backup the original file in case if you would like to restore the original functionality.
Author: Farhan Ahmad (http://www.thebitguru.com/projects/iTunesPatch)
2013-05-11, fa: Farhan Ahmad
* Added step to self-sign the modified binary. This should
prevent rcd from crashing on Mountain Lion. Thanks to user48986 at
http://apple.stackexchange.com/questions/64408/can-you-disable-a-code-signature-check
* Version changed to 0.8.2
2011-09-03 Farhan Ahmad
* Added Michael Winestock's info.
http://www.linkedin.com/pub/michael-winestock/18/579/972
2011-08-18 Farhan Ahmad
* Added a fix to account for spaces in the directory where the patch is
uncompressed. Patch submitted by Michael Winestock.
* Version changed to 0.8.
2010-11-28 Farhan Ahmad
* Wrote a new python based patching script that dynamically patches the files
instead of using bspatch and relying on a pre-supplied patch file. This
should make the patch work with pretty much all versions of rcd.
2010-11-23 Farhan Ahmad
* Packaged and released the first version.