Sony NET MS Walkman MZ-N505 TYPE-R

I was wondering whether anyone knows how to solve my problem. I bought a new Sony NET MD Walkman MZ-N505 TYPE-R and I insterted the Open Jukebox 2.2 disc and a message came up saying that an illegal operation had occured in the program. It does it every time I insert the disc. Do you know any other ways to copy music onto my MD Walkman or do you know what might be wrong with my computer/the disc?

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