BETELGEUSE

Ok so I have a comp question pertaining to mac, and to ipod purchases. On my Ipod I have music and videos and movies bought on another (ex girlfriend) computer. I have senuti and can rip songs and otherwise from my ipod, but not the purchased ones because of some lock that apple has on purchased music. Is there any way to get that data off of my ipod and onto my computer, props to whoever helps me with this shit.