Olivia Newton-John: Fine-tuned instruments

At the end of the month, Olivia Newton-John will get out of jail. In a movie role, of course. “I begin shooting `Sordid Lives’ when this tour is over,” Newton-John says, phoning from Atlantic City, N.J. “I play a singer who just got out of jail. So she’s a little tough. I think it’ll be fun for me because it’s so interesting to do different things.” Playing a felon isn’t something that fazes Newton-John. But playing a guitar is.