Oh crap -- I just found out that that the .iso disk image of my hard disk before WMP 11 can't be used because the media is corrupted,
and meanwhile, Windows System Restore doesn't go back far enough (only 'til May 09 - still after the point at which the DRM licenses fell prey to WMP 11).
I assume that I'm screwed? I couldn't just do a clean install of an earlier Windows with WMP 9 and bring back the .wmv files because their DRM licenses still won't install if used?
Sigh.
