No AVI or MP4 Files work in Windows Live Movie Maker. They are black with NO sound. I tried adding videos made a couple of months ago back into windows live movie maker, and it says they are corrupted or in a format windows live movie maker doesn't recognize even though they are wmv files. Once I put in an avi or mp4 it has to "prepare video" and after that its just black with no sound. The recording software I use is called Action! I tried not exporting the files and it didn't recognize them (they are avi) and I tried exporting them as AVI and mp4s and like I said, they didn't work. Any help is appreciated!