title: Importing existing Flash .xfl & .as files into Flash Builder 4
body: <p>I've been working with Flash CS5 (for a very short time..).
  I got a XFL file, its library files and AS files in a directory.
  I would like to use Flash Builder 4(FB) for editing AS files, running the compiled SWF and profiling.</p>
  
  <p>When I created a New->ActionScript project in FB, I could edit the AS files but didn't know how to link the XFL file and run them.
  When I created a New->Flash Professional Project, I was prompted for a XFL file, and although the chosen XFL file and the AS files are in a same directory, the AS files are not automatically included in the project. I couldn't find a way to add exiting files in the project either. I'm fairly new to this Flash &amp; Flex Platform and not getting this..</p>
  
  <p>Any help will be greatly appreciated. Thanks!</p>