Very Interesting.
Have you heard of The Monroe Institute?
By the use of sound technology the founder of the institute was able to create all sorts of mental states, one being the Lucid Dream and OBE. I suspect the two are the same. I have not tried the Lucid Dreaming CD. It is worth however going to the Monroe Institute website and reading the FAQ's

Check out: www.new-mind.com
For an explanation of the technolog go go: http://www.monroeinstitute.com/conte...?content_id=69

Rob