Suddenly my Powerbook refuses to play DVDs! It just shows any DVD as containing two folders, one called AUDIO_TS, the other called VIDEO_TS. I've tried clicking on the files inside these, but I just get messages saying the files are not readable and choose an application; I've tried going to Windows Media Player, iDVD, RealPlayer etc and opening them from there - still no luck! Help! My nephew's visiting and we want to watch Baraka, or failing that, The Lady Vanishes!