Sorry, I responded really quick on my phone. I originally installed MC on the PC as the Admin and I allowed any user access to the program. I can't remember which account I performed my original channel scan under but I do know that when I performed my latest channel scan under the new account with admin privelages, it worked. Afterwards, I bumped the account back down to user, and it still looks like it is working but I'm not sure if I will get guide updates as they become available. I'm not entirely sure if that answered your question but, there it is.
CountryBumpkin, I intend to use this machine as a server but I don't have any clients I regularly connect to it, other than an Android remote. I have a laptop that I do work from, but other than pulling music from the MC server I don't really use MC with it. I would like to keep all of my configuration, and metadata on the server machine, and watch TV and movies from client machines without doing a channel scan for each one in the future. I also keep my movies, music and pictures on the server machine but they are on a separate drive that I have shared with everyone. Controlling priveleges to that drive shouldn't be too complicated but controlling priveleges to each file and folder needed to make MC work right on each client might take a little practice.