From the NYTimes:

The Even-More-Compact Disc. The new disc by DataPlay -- which is the size of a poker chip but holds 11 hours of music -- offers yet another way to play tunes on a palm-sized device. By Michel Marriott. [New York Times: Technology]

Interesting, but 11 hours of music? How much compression are they using on it? That seems like a huge amount of music for something that size. I also really wonder how easy it will be to knock CDs from where they are. CDs were sold offered acoustic value over vinyl. CDs also promised to be recordable. And currently CD players are everywhere. I have nine devices in my home that I can play them on.

Of course, DVD has displayed VHS in an amazingly short amount of time also. Though once again, it was a format that offered better video quality and improved sound.