Recognizing SD card

I have loaded files onto my new memory chip–and I can see them through the computer.  However, how do I make the player itself see the card?  “Spinning the wheel” does not get jme to the card.

You dont see the card as a seperate entity. It is just a part of the whole. If you go to your songs list and scroll thru your list you may see a little icon next to songs that looks like an SD Card, those are the ones that are on the card.