Well seen as it's easier to edit the XML file on my Desktop and then SCP it over...maybe a good idea would be an option to get the XML file from a location on the web.
Also if the application reloaded the file on startup if more cameras were added it would update it and add them.
You could then subscribe to a XML "channel" in a way.

I may test out the tag and tag filter by adding more cameras in a different county with different tags, when i get a moment.