title: How to open an audio data
body: <p>I have a m4a file, and i want to open it...what should i do? i've tried the obvious </p>
  
  <pre><code>&gt;&gt;&gt; q = open('file.m4a').read()
  &gt;&gt;&gt; len(q)
  6989886
  &gt;&gt;&gt; print q[:10000]
  
  &gt;&gt;&gt;
  </code></pre>
  
  <p>It prints a blank line! i've tried to open the file with 'rb' flag but it doesn't work.</p>