TVTonic announced that the Media Center plug-in has been disabled due to the financial situation the world is seeing. With Video for your TV and PC: TVTonic is The Internet Channel — you can: “watch, subscribe and manage Internet TV channels;  
designed to be used with a remote control, keyboard or mouse; works on-line or off ; subscribe for automatic delivery of the latest content; exclusive feeds for TVTonic users”.

Source:→ WGS