I am having an issue with my 2 day old DX reading the sdcard. When I go to play music it gives me the message: Sorry this player does not support this type of audio file. It will also not save pics that I take either. When I restart the dx everything is fine for a day or two and then the problems come back. This is actually my second dx, first one was having the same issues. Could the issue actually be with the sd card? Thanks for any advice.