This player is very basic. There is no screen or internal memory. All you need to do is just pop a slotMusic card into the microSD slot, plug the included headphones into the standard jack on the right edge, and hit play.
The SanDisk Sansa SlotMusic player will retail for about $20. You will be able to buy "bundles", which would include an album worth of songs, extras on a 1GB card for about $35.