I will watch this case with great interest.
As we have commented before, media sentry was in effect wire-tapping, something the authorities can not do without a warrant. Thus their activities are illegal. They then pursued their prey relentlessly, sometimes on the flimsiest of evidence amounting to no evidence at all.
One of the elements of guilt for a prosecution to occur is "mens Rea" a guilty knowledge of the offence taking place. Thus some one using your ip address to commit the offences without your knowledge is the guilty person not you. The RIAA's legal team seemed to be unable to grasp this concept, a foundation stone of the legal system.