Is the Star Wars radio drama appropriate for children?

So I just found out that they apparently made a Star Wars audio performance after A New Hope, and according to my friends it was really good, and they all liked it. We're going on a family road trip soon,and the car ride will be very long and my young brothers (who are basically my kids, by the way, cause my parents are both sick) are HUGE Star Wars fans, so I figured I'd download the radio program on my iPod and play it to keep them entertained. However, I've heard from several people that there are some pretty graphic scenes, particularly a long and drawn out torture scene, with a lot of screaming, that takes place with Vader and Leia on the Death Star. Both boys absolutely love Princess Leia and the scene in the movie where the door closes freaked them out enough; I wouldn't want to scare them. I was hoping it would be better with no visuals but everyone keeps saying the scene was much worse than the movie. I have no way of sampling the scene for free, and I don't want to buy the program without knowing if I can actually use it first, since I'm short on money. So if you've heard the program, know where I can listen to this scene for free, or otherwise have input: is it appropriate or should I find something else?