Yes, it is.
I started going to mindful meditation last year, after seeing a 60 minutes program about it. I was intrigued. I was also a nervous wreck obsessing about my upcoming knee surgery and my need to control all the aspects of it and having no idea how to. I was in quite a state. Obsessing over and over, about my blood thinner, having a stroke in surgery, having AFIB, blah, blah, who to go to, where to have the surgery, who will take care of me post op, will my kids help. It was awful. So I went to this meditation group weekly, with a friend, and I noticed after many many weeks that I was calmer, and that some of the issues fell into place. I was able to plan, decide, and not be freaked out all the time. And I managed to survive the surgery.
So, yes, meditation tapes can't hurt!