Record audio iOS

Question

How does one record audio using iOS? Not the input recording from the microphone, but I want to be able to capture/record the current playing audio within my app?

So

Answer 1

This is possible by wrapping a Core Audio public utility file CAAudioUnitOutputCapturer http://developer.apple.com/library/mac/#samplecode/CoreAudioUtilityClasses/Introduction/Intro.html

See my reply in this question for the wrapper classes. Properly use Objective C++