I don't know about the camp-scene song, but at the end over the closing credits they played The Devil's Right Hand (great song) which is by Steve Earle. So perhaps it might be another of his?

Somewhere lurking in a hidden box I have the videotape of this film, but I moved house and haven't been able to find ANYthing for months. If and when I manage to dig it out I'll resurrect this thread if no one manages to answer the question (bet somebody will, though, knowing Catters).