When a friend of mine told me about Centerpointe's Holosync CDs, I was, to put it mildly, very skeptical. Still, my friend was adamant and they offered a money back guarantee, so I decided to try it for myself. Two weeks later I was swamped with epiphanies and profound insights into my own nature. I ended up buying the whole series.
Five years later I have had NO regrets and tremendous growth as a result. I highly recommend these CDs if you are into meditation. Basically they work by "slowing" your brainwaves from the Beta level down through Alpha, Theta and, to the deepest state, the Delta level. The Delta brain wave cycle is the state that advanced meditators achieve after years and years of meditation - and you can do it in half an hour. I still use these CDs in my meditation. Bill Harris, the director of Centerpointe, can come across as a bit of a pitchman, but you shouldn't let that dissuade you from at least trying out this wonderful tool for yourself.
In Fading Toward Enlightenment, you'll see how these CDs led up to a profound spiritual awakening that changed my life forever.