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http://milkshape3d.com/
This seems to be the URL now. I updated the wiki article (might take a while for it to show as the page is cached for the link you gave).
Fair warning: the site has not been updated since 2011. It is fee-activated shareware, and I do not know if anyone is minding the store any longer. (You can use it free for 30 days, but after that you just might be SOL.)