Projects/KDE on Windows/Installation - KDE TechBase
You can use this installer to download and install the various binary packages that you need to run KDE applications on MS Windows. KDE is free and open source so you can build all the applications "from scratch" from their source code; but as a convenience for others, volunteers create these precompiled packages and make them available on the Internet.
I had heard about this but I didn't know it was active. Can't wait to run Amarok on my work computer!