I have and old (1st edition) of the home study course on tape that I want to go through again. I was thinking of ordering a replacement set on CD (because the tapes are a bit of a problem now...) and I am wondering if anything has been changed on the recordings (I know that the book has some new sections on Direct Learning, Skittering...) but have the recordings changed at all? (and are the paraliminals on Cd as well).