title: scikits.talkbox: ImportError: No module named cffilter
body: <p>I'm trying to use the scikits.talkbox in python and I get the following error: </p>
  
  <pre><code>ImportError: No module named cffilter
  </code></pre>
  
  <p>I was looking for this file in the scikits.talkbox library and could only find 'cffilter.c' and 'cffilter.pyx' but not 'cffilter.py', it that the problem?</p>