don't understand. i guess you used fat file system formated your mp3. i'm not expert in this, 猜测你可能用你的操作系统格式化的mp3, 好像不能这么做,必须用厂商提供的格式化工具格式化。 if i were you, i would go look up the mp3 from the providers website, and see what they say about.... user's guide.......