LSCameraExtender is a tweak that adds some additional functionality to your iPhone's lockscreen, such as changing the 'Mute/Unmute' button to adjust rotation lock. It also changes your Camera button, that comes up with a double press of home, into a mute button. It has some customizable things, such as allowing you to double tap or hold down on the Mute button, to change it back to the Camera.

Unfortunately this is for iOS 5 iPhone users only.

I did not make this video, nor am i responsible for the contents of it.

This tweak is available for $0.99 from the BigBoss repo.