Read Bill Hunt on a file type as WRAPPERhttp://forums.adobe.com/thread/440037?tstart=0
What is a CODEC... a Primer http://forums.adobe.com/thread/546811?tstart=0
What CODEC is INSIDE that file? http://forums.adobe.com/thread/440037?tstart=0
For PC http://www.headbands.com/gspot/ or http://mediainfo.sourceforge.net/en
For Mac http://mediainfo.massanti.com/
Let's step back to the original Capture of the tapes, in WMM and PrPro.
Did you Export from each of those programs as DV-AVI w/ PCM/WAV 48KHz 16-bit Audio?
Note: WMM will Export as DV-AVI Type I files, and PrPro as DV-AVI Type II files. Similar, but different.
Also, in PrPro, depending on the Capture settings, if a Frame is dropped, PrPro will add a red Frame(s) to maintain sync with the audio. Did you remove those red Frames, if they existed? Not sure how WMM handles dropped Frames, so cannot comment on it.
Good luck, and let us know more about those files, please.
thanks a lot for the answer!
Meanwhile it seems that the problem does not lie within Premiere Elements.