Hey everybody! I fixed it. I’m not sure how or why it took so long for me to figure it out, but I learned a lot. Thanks for the ideas and troubleshooting @dan @Peter and @cslaughter it was appreciated.
Just for posterity, the final step was to make sure that my library was physically located within the same directory as the CMS. In my case this was (C:/wamp64/www/Xibo/XiboData). With Xibo being the CMS directory and XiboData being my Library directory. Now XSendFile can find and transmit the media files and do it quickly. I can delete the local library (on the client) and be back to fully functional in less than 5 minutes.
Thanks again.
Brian