Well, I'd consider the possibility of the DVD player "corrupting" the DVDs to be extremely small or zero. The DVD player does nothing more than simply read the data and can't change the DVD in any way. Of course, with a malfunctioning laser, I suppose it IS possible. However, if this were true, then you theoretically shoud see this happening to ALL of your DVD's.
Perhaps these DVD's have some sort of extra data that can't be processed properly by Studio 9? I really have no idea. Try using other software (DVD Decrypter and CloneDVD or DVDShrink for example) to burn a copy of these DVD's and see if these will play in your DVD player. If so, then we can at least say that it is a software issue.