In the 1980’s, software companies tried to protect games, applications, music and other digital products with “copy protection.” In the years later, more and more online music store appeared, and many online music sotre applied the DRM system on their music. Customer can buy the music but they are limited to copy them.

I can always hear that “Im trying to download music on to my mp3. But it just says this disc is write protected plese help me” or “I have been trying to find a program that will overwrite write-protected music CD’s so that I can load the music on my MP3 player, but I cannot find a way to do it. Can you help me?” I don’t know how many people are wait for to get the answer how to copy “write protection music” to the other device.

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