Dear Kevin, What an utter nonsense that the CD Auditory Demonstrations would no longer be available. It is counter-productive to spread this kind of disinformation via Internet. The ASA just had a new batch of 2000 made, and always has had a reserve supply available. You can order your CD at the Acoustical Society of America, 500 Sunnyside Blvd., Woodbury NY 11797, USA Adrian Houtsma