Sirius XM Radio sued by music heavyweights • 6:59 AM •Sirius XM Radio (SIRI) faces a lawsuit from Sony, Universal, and ABKCO alleging the company used recordings from before 1972 without permission. •The issue revolves around a federal copyright protection law that only went into effect in 1972. •If Sirius were to lose the lawsuit, it opens the door for more of the same variety.