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Saxguy - couple of tips
If your running the server on Windows, then rather than using your computer's local IP address you can use its machine name, you can get that in
Control Panel->All Control Panel Items->System. The advantages include - a) you control its value, b) its easier to remember, c) the IP address may change if you 'lease' the address from a DHCP server (usually in your router, which have been known to break).
You can run the server from the command line see ==>>
calibre-server — calibre User Manual. I have several one line command files for running different instances of calibre-server against different libraries.
BR