i know this isn't a flash drive but it is similar. i have a creative muvo tx fm 512mb mp3 player. the other day it would freeze up whenever i tried to power it on. when i did get it started some of the files were messed up and had turned to just static. i pluged it into my computer and reformatted it. that did nothing. then i realized that the files that didn't work were the mp3 format type. the windows media audio files were the only ones that worked anymore. i had the player out in my car overnight and it got alittle cold (40 degrees) that is the only thing that i can think of. the mp3 format files always had worked before. does anyone know of anything that i can do to fix this problem.