I have iTunes running on one computer and several Airport Expresses around the house, which I control with the iTunes Remote app on my iPhone. I'm thinking about replacing an aging Media Center computer with a Mac Mini, and it would be great if I could have that computer impersonate an Airport so that I could direct music to its speakers.
Is there a way to do that? Otherwise I would have to have an Airport sitting next to it and have some way of switching the speakers from the Mini to the Airport.