I noticed the standard build in apps from LG are a bit primitive. You can better look for apps that play music or use DLNA servers from you computer that can display the content much better. Examples are Serviio or Plex but there are more.
When you setup your tv don't say you have live channels. If you don't do this, it will not display the live tv any more.
You have to choose settopbox and then select the sky box.