title: How to time-shift audio on iPhone
body: <p>This is similar to <a href="https://stackoverflow.com/questions/1100495/real-time-pitch-shifting-on-the-iphone">The Pitch Shift question</a>, except I want to keep my audio at the same pitch, but play it slower or faster -- time shift it.  (On the iPhone.)</p>
  
  <p>Can anyone point me to a library, tutorial or other reading to help with that?</p>
  
  <p>Thanks!</p>