Sorry it's been 2 days to respond. I've been trying all the suggestions, and others I've found, but still no luck. I've been looking over my shoulder thinking I've done something wrong, when I don't think I did.
I have a file on my computer that plays great with Windows Media Player. When I try to play that file with Nero, it becomes jumbled, almost to the point of not being watchable.
I've downloaded AVIReComp (that was free) and ran the file through that, but same thing occured. I'm now trying to use a trial version of "CovertXtoDVD". I ran the file through that, but don't know where the output file landed so can't check it. Still no reply from Nero, but I believe if I can get the file to play correctly with Nero, it will burn to the DVD correctly.