I've had the MAP book and cd for over a year and after an initial attempt at the BWG and my headphone problem, it's only this past week I've picked it up again and began thinking about the BWG again. And, typical of my total idiocy with all things pc related, I've only just discovered I've been putting the headphone jack into the wrong hole (duh)! So I was able to get it to work the other day and was delighted but then to my horror, I found that having the sound going kind of 'interfered' with my ability to concentrate on the energy work - I kept concentrating on the sound and forgetting about the bouncing and sponging and I'd have to keep bringing my focus back on to the energy work. So I'm going to continue without the cd. I'm used to meditating and altered states and I just found the sound 'got in the way'.