I used root explorer but I'm sure it can be done with others. First go into system folder then to a folder called csc, look for feature.xml then press and hold it until the sub menu pops up now press on "open in text editor" , in text editor look for "CscFeature_Camera_ShutterSoundMenu>false<" once you find it delete false and type in true so it would look like this "CscFeature_Camera_ShutterSoundMenu>true<" then back out and save and exit. Now restart your phone and in the settings in camera now there's the option to turn shutter sound on or off.