Would be good to know. I don't have any WMV to try it on.
I just found one in my Mail Downloads folder. As I have Flip4Mac WMV it plays in QuickTime Player which shows the format in the Inspector as "Windows Media Video 9 Standard" and "Windows Media Audio 9 Standard".
This wmv file imported flawlessly to Handbrake. It was then converted by Handbrake to an MP4 file format using the H.264 (x264) codec. The resulting m4v file played perfectly in both QuickTime 7 and QuickTime 10 Players.
Interestingly, the original wmv file imported to iMovie '11 but a warning was given that a watermark would be placed over the video to the effect that Flip4Mac Pro was needed to remove the watermark (cost $29). I proceeded to import the file, and as warned, a watermark did appear. I separately imported the converted file (m4v) to iMovie with no issues at all, as to be expected.
So, in a nutshell, Handbrake does convert wmv files (but perhaps not all flavours). Also, the converted files can be imported to iMovie '11.
As Limnos suggests, Joe's files may be DRM protected, preventing him from converting them. This does sound odd though, given that Joe's files were created in Photo Story 3 (see the original post). I would have thought that these would not be copy protected.
John
Message was edited by: John Cogdell - added last paragraph.