I have a pc dedicated to p2p what aplications can protect me against the companies like RIAA... i only knows peerguardian, and i have firewall
For that purpose, only PeerGuardian comes to mind, atm. A firewall won't protect you from the RIAA, though, unless your blacklist is integrated into it. You can also download through an anonymous proxy server, although I would imagine that it would be against the rules for most proxies to be used in this fashion.