You add the .idx file as the subtitle file. The .idx file itself points to the associated .sub file, so you don't have to tell ffmpegX about the .sub file. Note: this only works for encodings with the 'DVD mpeg2enc' preset and 'Decode with mplayer' activated.
Tonight is the night- Game of Thrones, season 6, premieres on HBO. The show begins at 8 p.m. CST, and will last for one hour.
Episodes are broadcast on Sunday at 9:00 pm Eastern Time, and the episodes for season one to six are between 50 and 69 minutes in length. The first six seasons are available on DVD and Blu-ray. As of June 26, 2016, 60 episodes of Game of Thrones have aired, concluding the sixth season. The series was renewed for a seventh season in April 2016, which will consist of seven episodes. It will premiere later in the year than the previous seasons in mid-2017. The series will conclude with its eighth season.