Even if the reports are true that Fox wants to replace all four judges on American Idol next season, it doesn't matter to Randy Jackson. Jackson tells E! News exclusively that he's done with the show. "Yo! Yo! Yo! To put all of the speculation to the rest, after 12 years of judging on American Idol I have decided it is time to leave after this season," he says. "I am very proud of how we forever changed television and the music industry. It's been a life changing opportunity but I am looking forward to focusing on my company Dream...