NOW: Testimony is underway in the Caleb Flynn murder trial after jurors heard from his former mistress and listened to AI-generated songs prosecutors say he made for her. Flynn's mistress, Alleigha Botner, testified she became immediately suspicious after Ashley Flynn was killed because Flynn had told her the night before he planned to leave his wife. More witnesses are expected, including potentially Flynn's 12 and 10-year-old daughters, who were home the night their mother was killed. Watch the key moments from court and what Flynn allegedly said after his wife's murder. @​Garrett FoxNews Download the FOX News app to follow this developing story: ▻