I have had the Quietitude CD since 2002. I am not sure how useful it is.
In my view, using brain entrainment CD's (Paraliminals, Holosync, etc) too often like can put you into emotional overload. It would be like eating no-stop for hours: eventually you get sick... if you keep doing it, it could get worse.
I use Holosync to meditate and, once a day, I use a Paraliminal from my collection of 33 of them.
If I need to relax, then I use a self-hypnosis CD since it has no brain entrainment. I also may use some emotional freedom technique or massage or take some natural remedy.
