Built-in music playing control on iPhone that has a single button?
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I'm developing programs on iPhone and would like to know whether there are some built-in control in Xcode to play music with a single button. That is, when we click the button it starts playing music and when we click it again it stopped playing. I have tried MPMoviePlayerController without any success.

The UI is just like below: (Sorry I cannot upload images here right now)

http://www.flickr.com/photos/83371245@N08/7631478656/in/photostream/lightbox/

http://www.flickr.com/photos/83371245@N08/7631479138/in/photostream/lightbox/

Thank you in advance!