Great, after you message I thought I would give it a try.
Seems like when you have a client session open, you can rename tags, delete songs, etc etc, - but when you close the session and reopen it again - all the changes revert back.
This is what I was hoping for.
For those of you that are looking for the opposite of this where the client has full access....I have found my own workaround.
1. On the server I have a drive partitioned and assigned the drive letter M. All my music and libraries are stored here.
2. On the client machines, I have mapped a the M drive from the server as M drive on the client.
I have found that when you point everything to the M drive, you can manage your music files from any machine setup this way. However all the changes you make are only saved when you exit Media Center.
So if you are making changes from machine/client A, and before closing MC, you open up another MC session on machine/client B, the Media Center that is closed LAST will save the settings.
I don't know if that makes any sense or not.
This setup has worked great for me as I have all my music stored on a file server.