Complex sentence: For reasons unknown, the show did not record in front of an audience; instead, an "applause track" was played after correct answers, in and out of commercial breaks, and at the beginning and end of the show.
Split into simpler sentences: For reasons unknown, the show did not record in front of an audience. Instead, an "applause track" was played after correct answers, in and out of commercial breaks, and at the beginning and end of the show.