Hi vamplover5107,
It seems you would like more information about the Home Sharing features in iTunes. Home Sharing is only used for home networks. For example, sharing your library across multiple Apple devices on your home wi-fi network. To access your full library remotely you may want to consider subscribing to iTunes Match. I've included links to both features for you to learn more:
Learn more about Home Sharing - Apple Support
Home Sharing in iTunes lets you share your iTunes media libraries between up to five computers in your household and play your iTunes content on your iOS devices and Apple TV (2nd generation or later).
Subscribe to iTunes Match - Apple Support
iTunes Match stores all of your music in iCloud, even songs you’ve imported from other sources such as CDs, and gives you access to it from all of your devices, at any time. iTunes Match is an annual subscription.
Thank you for contributing to Apple Support Communities.
Take care,
Bobby_D