Hey everyone!
I was browsing around and trying to catch up and learn more about the audio frameworks for CocosDenshion and wrote up an article about a neat effect of level metering with the background music.
There's also a demo below!
Check it out and hopefully someone can make use of the classes I created. Give me some feedback if you have any.
http://fancyratstudios.com/2010/02/programming/cocos2d/fun-with-cocosdenshion-and-audio-metering/