International Family Sync

So here's the question - how do you make the following work?

Potential client travels extensively, homes in London and overseas, where members of his family (eight people in total) live, and of course enjoy music. He would like his music collection to be available to everyone, everywhere. They have a mix of iPods and iPhones.

Well my first thought was a cloud service such as Dropbox. That appears on your desktop pretty much as if it were a local drive, so computers in each location could be set up to reference their local version of a central Dropbox folder holding the family music. Two problems came to mind, one being the cost. Not the cost of using a CD ripping service but of buying close on 100 Gb of Dropbox space; but then if you can afford to live internationally I don't suppose the cost of a Dropbox account is a show stopper.

Second, and more significantly, is the fuss of adding more music to the library. A CD would need to be ripped then added to the Dropbox folder, then each local PC would have to reload their PC so that iTunes picks up the latest tracks. Sure you could simply "share" the central library but then the remote iPods won't be able to sync at all.

Having given this some thought the only viable solution I can see is to set up an iTunes Match account. It's around £25 pa, affordable, and you can connect up to 10 devices. Other Macs and PCs can be part of this network and changes made centrally are replicated across the network. Music can be streamed to the iPhones or loaded like an iPod in a sync process. This seems to me to be the most viable solution.