Recognizing Micro SD card in SMC

When I plug in my Sansa Fuze with it’s Micro SD card to upload videos on it, it doesn’t show up as the card. Only the Fuze shows in SMC. What am I doing wrong?

Try switching your USB mode on your player to MSC.

I’ve had this issue since day 1; I thought it was my SDmicro disc but one day… only once… did it show up on Rhaposody.  Can’t see it through my computer and not under either mode MSC or MTP.  I dont know if the device is defective or what.  I can see the SDmicros in my treo but I can’t for the life of me figure out how to see it … let alone add stuff on it.