#22 — File content type not displaying type 'swf' automatically

Using the latest eggs of p4a.

To reproduce:

   1. Add new -> file
   2. Attach an swf (I've attached one to the ticket for your convenience)
   3. Save
   4. View -- .swf does not display
   5. Right click on area says "movie not loaded"

We can see the following error in the logs:

[err!] Error during metadata extraction: Can't get field "rect" from /