Anyway to format this card so the media manager recognizes the card and it actually has 6 GB of usable space instead of 1.68 GB??? I've tried everything i can think of and SanDisk has no clue. When I just drag songs in using explorer the majority of the songs don't play and I can't figure out why. It shows a correct file size but then a time of 0 seconds for the song and skips them so I'd really like to get this working with media manager.