The newest device from Sandisk isn’t technically an MP3 player at all. At least not in the traditional sense. The new slotRadio is a portable music player that plays audio files stored on purchased memory cards. These cards are preloaded with literally thousands of today’s top songs and are available to be bought individually and played with the slotRadio.

“The immediacy of the plug-and-play model offered by the
card-plus-player format ushers in a new way for consumers to enjoy
music. To date, portable music devices typically required software
installations, followed by time-consuming music selection and
file-by-file downloading, topped off with cable connections and
synchronization….slotRadio dramatically lowers these barriers,
offering a genuine alternative to existing options”

Press Release (via DAPreview.net)