Movie Maker lets you turn your photos and videos into great-looking movies and slideshows to share online, on CD/DVD, and mobile devices. Movie Maker's been redesigned to help you make movies you'll be proud of. Import and combine photos, video clips, and music, and then edit your movie so it looks great. It's easy to publish your finished masterpieces to the web.
Operating System Requirements:
This product is designed to run on the following operating systems:
I downloaded the installer here and when it was installing it first asked me with checkboxes what Windows Live components I wanted to install. None of them in my case since they list everything BUT Movie Maker.
I then searched Microsofts site and appearently you have to install ALL of the components to get the privilege of working the bugs out of the beta. I don't use any of the components and I have other apps installed to do most of the functionality of Windows Live and don't feel like manually reassigning default apps and wasting HDD space.
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To install WLMMbeta you have to install ALL of the Windows Live Components - Version: 14.0.8064, 7/22/2009 11:27AM PST 
I then searched Microsofts site and appearently you have to install ALL of the components to get the privilege of working the bugs out of the beta. I don't use any of the components and I have other apps installed to do most of the functionality of Windows Live and don't feel like manually reassigning default apps and wasting HDD space.
Baaaaad move Microsoft, Bad move.