avTouchController VU meter for iphone radio app

Question

Hi friends,

I'm trying to implement the VU meter code sample from http://developer.apple.com/iphone/library/samplecode/avTouch/Introduction/Intro.html in my iPhone Radio app.

Until now no joy.

My question: is it possible to implement this VU meter, from AVAudioPlayer class, in my code, that uses another object that parses the mms stream, decodes the wma file using ffmpeg and plays with ffmpeg?

I'd like to implement using the iOS 4.0

Thanks!