Share your experience!
Can you please rephrase?You want to close some apps?They are run in the back,if you do not force close them.
I do not think this is possible,unless you mute the respective apps or games.I think I managed to do that with my FIFA 12 game.I muted my game and walkman played.
I agree with alexdon this is something that you will have to suggest to the app/game developers