第三，试着按下重置按钮手动上传草图。
Third, try press reset button manually while uploading sketch.
以前购买的MP 3不会自动存储到你的云驱动器中，但是你可以手动上传。
Old Amazon MP3 purchases aren't put in your Cloud Drive, only new purchases going forward (though you can manually upload).
此外，亚马逊也有一个和iTunes一样大小的音乐库，但你需要手动上传所有音乐，而不是让服务器和你现有的歌曲进行自动匹配。
On top of that, despite Amazon having a music library the same size as iTunes, you still have to upload all your own tracks rather then the servers matching their content with what you already own.
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