For example, it says Metalica on it, but it is really a local band somewhere which tries to sound like Metalica in tribute? How could the script tell the difference? Or what if someone mislabeled it, and put Metalica on it to trade it to someone, but it is really 5 minutes of silience (A Cuckoo's Egg) or some other noise?
I can see the reverse lawsuits happening if someone wanted to be sued, and put popular band names on their silly MP3 files which are really nonsense sound files, and then proving in court that they do not actually have the songs in them, but silly sounds. They would want to be sued so they could counter-sue and make some money.