What LoudBlog is:
LoudBlog is a sleek and easy-to-use Content Management System (CMS) for publishing media content on the web. It automatically generates a skinnable website and an RSS-Feed for Podcasting. Just upload your audio/video files, add some notes and links, and you’re done!
Ever dream of running hundreds of thousands of blogs with a single install of WordPress?
WordPress MU, or multi-user, is designed to do exactly that. It is most famously used for WordPress.com where it serves tens of millions of hits on hundreds of thousands of blogs each day.