Ok, so ... I was using the micro sd card (sandisk 2 gb) in my mp3 player (sansa c200). It worked just fine. Then I had it in my phone (lg rumor) for a few days, then I put it back into my mp3 player ... Now, suddenly, I can't see the music files. I know they are on the micro sd card, because the space used is nearly full ... but my phone must have encrypted them? or they are hidden somehow? Anyway, now I can't detect them on my phone, mp3 player, or PC. I do not want to format ... any help on retrieving these files would be greatly appreciated. Thanks.