resource icons

I am importing 11k files into XFRM. Most of these are documents like PDF and DOC. I would like to add an icon to these files according to the file type. So that PDF's get a PDF icon, DOC files get a DOC icon, etc. Is there a way to do this? Maybe with a query?

What does this add-on do? This add-on adds an option to the Admin Control Panel to change the width and height of resource icons. Upon changing the option, all future resource icons are resized to the given size. In the resource list and in the top-left hand corner of the resource, icons are...