The key to Apple's extraordinary success has been the simplicity of the interface between the iTunes Music Store, the computer and the iPod. Why did iTunes experience such phenomenal success? While "coolness" may have been a factor, the core reason was functionality. The consumer could see an obvious difference, and the rest is history [see: "Better Best Be Better"].
The big news isn't the players this time (well, except for maybe the iPod shuffle), it’s the software. In a forest of "me, too" competitors, Apple's once again delivered something that the public can see the advantages of. IMHO.