A:AnswerWhen you hook up an external speaker to the 3.5 mm headphone jack on the TV, the TV speakers should automatically turn off. Try this: go Home > Settings > Display & Sounds > Audio Output > and set TV Speakers to Off.
A:AnswerYes it has Tubi. It is not on the Home Screen but is in the “all” apps section. After the first time opening it, it will be on the Home Screen. Also it is just like a fire stick, you can download any app it does not have preloaded.