To Get or Re-Install this addon you need to:
Have http://xfinity.xunitytalk.com added, to do this: go to system and underneath you will see file manager. click on that and click add source. Then click where it says <None> and type http://xfinity.xunitytalk.com then come down to the bottom and give it a name like xfinity (for example, it can be whatever you want) and click OK. now come back out and go to system, then add-ons, then install from zip file, then click on xfinity (or whatever you called it), then click XunityTalk-repository. Then come back out untill you see get addons. click on get addons, then XunityTalk Repository, then Video add-ons, then filmon and click install. To re-install follow these steps and click uninstall then install again.