title: What is the easiest way to wrap a raw .aac file into a .m4a container
body: <p>This question is overflow from the following question:</p>
  
  <p><a href="https://stackoverflow.com/questions/70096/how-do-i-programmatically-convert-mp3-to-an-itunes-playable-aacm4a-file">How do I programmatically convert mp3 to an itunes-playable aac/m4a file?</a></p>
  
  <p>Anyway, I learned how to create an aac file and then i found out that an aac is not just an m4a file with a different file extension.  In fact, I need to somehow wrap the aac into an m4a container.  Ideally I'd be able to simply make a call to the command line.</p>