Mr. Bruce and Mr. Mercer, thanks for the putting these CDs on the market. They're a great help, definately five star material. I've already bought a second copy to give as a gift. I do have one question though: Will alternating between the BWGen from the MAP book and the CDs from the MAP 6 CD set help keep my mind from becoming tolerant to a certain preset, or are the altered state sounds on the CDs the same as those in the BWGen? In other words, are the altered state sounds on CD2 Relaxation the same as either the week 1 or week 2 presets in the BWGen, are the sounds on CD3 Meditation the same as those in week 3 from the BWGen?