While light on details (or a link to the report or details on methodology), Reuters/CNet posts on iSuppli's new survey that shows that over the next five years, shipments of MP3 music players will expand from 36.8 million in 2004 to 132 million units in 2009.

Consumers may not want a swiss-army product as the report alludes, however I think a product that plays multiple formats and supports multiple music services is still important.