I OWN YOU, PLAY DAMNIT

So, my dad's trying to get his mp3s off of his old hard drive by putting it in the new tower, alongside the brand-new one. The computer accesses the hard drive just fine, and has no trouble opening everything but the mp3s. When he tries to play/copy/anything, he gets this message:



If it helps, he's running Windows 7 now.

Anyone know how to bypass this?

(and thanks for all the birthday wishes so far! =D)