The animation is well done, I was just being nit-picky, because that's how I am about everything.
And I would highly suggest staying away from WMM at all costs :/ It's not hard to find a PERFECTLY LEGITIMATE version of Adobe Premier or one of the many other professional grade video editing programs. WMM's interface is pretty terrible, IMO. I've used Premier/AfterEffects, Flash, and WMM, and I believe most other professional grade ones are similar to Premier anyway, and out of those, I much prefer Premier (AfterEffects is good too, but for different things, simply arranging a time line is not very simple in it). WMM dumbs things down, but IMO it goes too far, and dumbs things down so far as to make some things problematic. The only thing I find it useful for is the ability to automatically break a long video into "scene" clips.
That makes editing AMVs and such so much easier, so what I would tend to do was find the scenes I wanted from the file, export them lossless, and import them into premier, lol.