I don't disagree that the problem can't be addressed, my frustration (perhaps to strong a word) is that the solution isn't more elegant. As you'll note from the full post, MC does a much better job with this that Vista Media Center does with extenders. A more robust client- server system would be preferable. That being said, I realize that this is a $40 product and that my situation isn't typical-- so I can't really blame J River for not implementing this. But it would be nice...
I found that making the Media Server instance read-only created several problems for me:
-- Media added from other PCs wasn't reflected in the Media Server library, becase the library only updates when the Media Server instance starts and I keep that running 24/7 as it is on a server in the basement.
-- The Media Server and and client PCs would both try to download the same podcasts, creating duplicate files.
Having the server auto-import new media appears to work, albeit slowly.