iOS Sprite Ripping

Hello, I have a question about sprite ripping for iOS.

How do I convert XCode compressed PNGs into normal ones? The application I'm trying to rip is Danmaku Unlimited. Since I am using Windows, I cannot find a program that will work on Windows.

Actually, I'm trying to take only one sprite, which can be found here: http://www.mediafire.com/view/sw9462g8bj..._atlas.png

Also, how can I convert them back on Windows?

If I cannot do this on Windows, can someone else do it for me?

Thanks,
BedrockSolid

EDIT: Fixed my problem with a python script, please lock thread.