I did that before. I also ran installrite (a great program for that kind of thing if you ask me) and filemon to see what happens during the switch. I see where the application attepts to access a database file under all users, but I can't access the database myself. I see no other areas that specify which jack it is connected to. I do also see that the mmc application stores what the connector status was in a key AFTER the application is closed, but does not change it while the application is running.

EDIT: If you need, I can post a regmon log with the info in it.