Just for future reference ,This is if have already have set up Xtream Editor with a supplier and have to re install for any reason. You can go to
Plugin, Addon Interface | XEEV Playlist Editor and enter your app code and then your playlist(which is your line ID) and then press save. You can find your line ID on your box by going to plugins and opening your XE downloader and you will see your line ID which is a long 32 digit number. This just saves the hastle of having to waiting for your supplier to add it.