CES 2009: SanDisk's slotRadio does music without the downloads

Songs can't be removed from the card, but users can easily navigate between the playlists, and skip through tracks at the press of a button.

Additional 1000-song cards will be available, at $40 each, and the cards are designed to be interchangeable with any slotRadio player as well as being compatible with Sansa Fuze MP3 players.

The player itself has a diecast aluminium body, a 1.5in OLED display and a built-in FM radio. Both player and cards will debut soon on the company's sansa.com website and at over 4400 Radio Shack outlets in the US.