Comment Nope you're wrong (Score 1) 758
Through an Md5 database hosted on the RIAA website or funded by the RIAA. Every legal file could be known. And then every illegal file would be among those not in the official database.
If I encode my audio tracks at 128kbps MP3 for my player and you encode it at 192kbps AAC the MD5 hash is going to be different. The options are endless I knew someone who encoded at at 127kbps or 193kbps because they like prime numbers. I cannot imagine that unless the source of the rip encoded a digital marker that anyone, including the RIAA, could prove the music was illegal. I'm guessing the best defense against a case brought against you for music piracy would be a receipt...