I haven't tried this product but I have tried some sleep CD's that I bought at my local bookstore. I was prompted to try one of these CD's by my doctor who first sent me to a sleep study to see if I had sleep apnea and when he ruled that out he told my I was too stressed out and sent me to a therapist.
My therapist suggest the sleep CD to help relax me and get me to REM quicker. I found that when I used the CD, I did relax and was able to fall asleep with ease. I also woke in the morning feeling that I got a full nights sleep.
I also tried a CD with musical sound and singing/speaking. This didn't work for me because I found the voice distracting.
Hope this helps, even a little.
Good luck!