1. System comprising: video display; processor controlling video display; TV tuner providing TV signals to the processor for presentation on the display; the processor presenting a user interface (UI) on the TV display, the UI listing icons representing respective media sources in a horizontal row, at least one media source being the TV tuner represented by a TV icon an at least one media source being a non-TV source, wherein when the TV icon is active a list of TV channel icons is presented in a vertical column under the TV icon, wherein responsive to a TV channel icon being active first metadata associated with a respective TV channel is presented on the display, wherein responsive to the TV channel icon being active for greater than a first period second metadata associated with the respective TV channel is presented on the display without requiring the user to tune to the TV channel or invoke a program guide application, the second metadata being acquired from a program guide application.