I posted basic instructions for how to access Calibre Content Server from the Kindle web browser.
https://www.mobileread.com/forums/showthread.php?t=71220
The question I have, is there and easy way to have Calibre use a restricted port under Windows?
I also tried Fedora 12 and the GUI had the same behavior of preventing the use of any port between 1 - 1024.
Running calibre-server from the CLI as administrator under windows did allow the serve to bind to a restricted port, but something else was wrong with the library path.
FYI, the Kindle web browser does not allow arbitrary port specifications as part of the web URL. However, it turns out that the Kindle web browser will accept a URL of the form
http://ip.address.com:443