Like XenForo 1.x itself, add-ons for XF 1.x are in support mode. This means that they will receive bug fixes and security updates only. They are feature locked and no new features will be added.
If you have obtained any of my premium add-ons from another site, you DO NOT have a valid license for those add-ons and no support will be given to you. The only place that can sell licenses for my premium add-ons is this site.
I have many people uploading different file types and I got tired of the generic file icon in XF and I did this for myself after investigating another add-on that does the same thing. I didn't like the way it was being done and decided to do my own.