The ultimate defense: P2P IP address spoof (Score 4, Insightful)

It seems to me that if someone could demonstrate how to use a common P2P client like Bearshare or and make it look like someone else was using it, it would throw out RIAA's entire case. If I could share my files through my computer, but make it look like it was you doing it, your defense would be "I was hijacked", but I don't know by who. If you could claim that you were hijacked, suddenly everyone else could claim that too. Presto! No case against anyone! They could no longer prove that an IP address is really associated with a particular Verizon (Comcast, Road Runner, etc.) customer. Reasonable doubt could prevail.