I recently bought a "1.83 LCD 2GB Car Mp4 MP3 Player Transmitter" from eBay I've since left good feedback. So I can't return it.
The device has 500mb of internal storage which I can play MP3s on no problem.
I bought an SD 2GB card and a card reader / writer and initially had problems as the card was formatted to FAT and would only accept 125 files per folder. I created more folders and added files to each. However transmitter didn't like it.
I then formatted the card to FAT32 and copied all my files to it, no problem. When I put the card in the transmitter is says card empty.
I kept the files which were on the transmitter to start with and copied the MP3 onto my SD card, but it said the card was empty, I think, while the 500mb area was empty.
I have emailed the guy and he does reply, but his english isn't very good. The instructions are in Chinese too.
Suggestions of what else I can try?