Hello, I'm looking at buying a flash based MP3 player that has a SD lost for expansion. This one in particular Ultra 256 MP3 player . It takes upto a 512 mb expansion SD card. But, would a 1GB also work. I mean would it recognize it and allow me to use the first 512mb. OR would it simply not recognize it at all? If any of you have this kind of experience with any MP3 players with exansion slots, can you let me know about it.