title: How To Record Audio With background Music?
body: <p>from Last Few Days i am working on an iphone application Which needs to record the users audio and save it with a background music in it , in Simple words by appending two audio files generate a third audio File, 
        I try to do it using AudioToolBox api but no success in it , can any one suggest me the right direction where to go for that any suggestion,???</p>
  
  <p>Thanks,</p>