I've downloaded a few WMV files with the audio and video out of sync. Is there a way to convert these files for DVD use and correct the synchronization in the process?

I know that AVI files with this problem can sometimes be fixed by extracting the sound to a WAV file using VirtualDub and then using separate audio and video sources to make the converted file. But this doesn't work with WMV files, as I'm sure is known by most of you reading this posting.

Is there a way to do this?