My source material are vobs ripped from the DVD, so they are in perfect sync. I am unable to use the navigator-simulator (it doesn't work) because I don't have a MAestro compatible software dvd player or a hardware card (although I have a Realmagic Hollywood Plus card in my system). I get a 'Decoder Connection not established' error. How do I get it so that the navigator-simulator works? Also, when I was in the menus, none of the selection arrows on the remote work either. I did follow Doom9's guide where he says "I basically checked everything but the Root Menu call and for the main menu I deactivated everything." This could be the reason for that problem. Although that wouldn't make much sense to deactivate the arrows on the remote so that they didn't work. You would be unable to make any selections (i.e. chapters). Please help. Thanks. I will try burning directly out of Maestro next, after I fix the above mentioned problems. BTW, I checked the vobs in WinDVD and DVD Station (<--- the software for my Hollywood + card) and they both are out of sync. The orginial AC3 track (demuxed with dvd2avi 1.76) shows a delay in ms, but I was told that when authoring, that delay doesn't matter.