MP3 Jukebox Software With Networking?

Milo_Mindbender asks: "I need a jukebox that supports networking with copies of itself on other computers. The main feature I'm looking for is the ability to have different MP3 files on different computers but keep a single master catalog covering all songs on all the jukeboxes you can access. If you request a song that isn't on your machine, the jukebox that has it would stream or copy it to you. I've seen a number of packages but the documentation isn't clear enough to tell if they have this feature and how well it works. The setup of each package is too involved for me to try them all. Any recommendations from people who have actually used this kind of software would be appreciated."