The entertainment industry is going the last mile in its war against file sharing. On Friday, October 8, the Motion Picture Association of America (MPAA
), the Recording Industry Association of America (RIAA
), and the National Music Publishers Association (NMPA
) appealed to the US Supreme Court to overturn a lower court's ruling earlier this year that peer-to-peer (P2P) file-trading networks can't be held liable for copyright infringement.