How to get my Iphone 4s music not to play from the lock screen in silent mode?

Basically I need to keep my phone from allowing anyone to use music when its locked, but I know there's no possibility of that--so I was just wondering if you could help me figure out how to keep it on silent? Like, when I play videos in silent mode there's never any voice unless I turn it back to normal mode, but its not the same for music, they still play loud and clear. Help?

(If you have another way of keeping my music from being accessed on the lock screen then that would be just as helpful, thanks X)

As far as i know there's no way to change the settings to block the double home button music controls. That being said.
You can only play the currently selected soundtrack. So a fairly easy Solution would be to make a blank voice memo and move it to itunes and create a play list with just it as the songs available.whenever you want to lock your phone make sure that is the currently selected play list and would be music listeners will not be able to hear anything.