To Get or Re-Install this addon you need to:
Click this link for a direct download: HERE!!
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 repositories, then Spoyser.zip. Then come back out untill you see get addons. click on get addons, then spoysers XBMC Add-ons, then Music add-ons, then muzu.tv and click install. To re-install follow these steps and click uninstall then install again.