Have been ripping DVDs to my hard drive to then import to iTunes and my iPod for some time. Used to be on my Leopard Mac Mini. Have bought a new MacBook and used Migration Assistant to transfer everything across. For some reason HandBrake now doesn't recognise DVDs as a source... Any ideas? Have tried re-installing HandBrake but still states 'no valid source found' even though I am pointing it at the DVD in the Superdrive.