I've heard of similar CDs offered by
The Monroe Institute. They claim to work in a similar manner, combining subliminals and brain-wave frequencies. As for myself, I am leery of trying such instructional methods myself, just because I have no idea what is in the subliminals. It would be interesting if there was an open source tool to create such a subliminal for my own use, but I really do not want to subject myself to somebody elses subliminal messages without knowing exactly what is being said. After all, I could suddenly find religion in a huge way and give all of my money to some comet-cult somewhere.