I got a Kingston 32GB card for my 4gb Sansa Fuze+. I first formatted it in the Fuze, then used the “sansa fuze” icon in my computer to copy the folders & files to the “music” folder.
The problem is that after I copy, say, 5 albums (folders with mp3’s in them), transfer to the Fuze gets slow, and then when I go to look at whats in the card with the Fuze, it says “empty”. However, the songs are there in windows explorer though. Also, I noticed that in the Fuze, the “card” section turn from MicroSD to a different icon and says radio slot.
I have tried about 8 times so far, formatting the card in the Fuze, then using windows to copy the songs over. I have also used totally different songs to make sure there was nothing wrong with them. Also, tried different usb ports and re-booted pc.
Also, tried putting the card in my Sony DSC-HX9V camera and recored HD video with no problems or slow copying. Then put it back in the Fuze and re-formmated.
*edit - tried putting it in MSC mode and it transfers everything fast, but still having trouble with missing songs in the Fuze and windows.