Actually the auto-translation told us a lot of info! The grammar might not be correct, but it was still very informative.
Also, why would the website that the password accesses contain MP3s? Avex put on the copy protection to prevent piracy, and for them to create a website that gives out MP3s would just promote pirating, in my opinion. It would be nice because the people who bought the CD would be able to legally have MP3s on their computers. They would be able to have a digital copy of the song on their computer (legally). But unfortunately record companies usually aren't very nice. We'll see what happens.