title: Aliasing links to files in Drupal 7
body: <p>I have a problem with my Drupal website.</p>
  
  <ol>
  <li><p>I have links in bodies of book pages, which link to a file.
  What I want to change is, that the URL that is showed, should look different, instead of: <code>sites/default/files/../../file.pdf</code><br>
  I want something like <code>documents/file.pdf</code><br>
  How to do that?</p></li>
  <li><p>I also want to do this with uploaded/attached files, I downloaded the modules file aliases, but it doesn't seem as it works? </p></li>
  </ol>
  
  <p>Does anyone of you have an idea or already did this, and could explain me how to do that?</p>
  
  <p>Thx in advance</p>