Well if you have a lot of money, enough to be in the market for a custom home-theater install or other type of networked music management system, and you use iTunes heavily, ReQuest has your back. Or more precisely your back-up.
Their new NetSync technology that is applicable as an update is available for most of their audio based systems and it allows you to use iTunes but keep everything synced and backed up on your ReQuest server(s). The process works both ways, like if you update something directly on your ReQuest equipment, it will update iTunes with the new data the next time you open it.
Seems like a pretty nice, and simple, service to use to keep everything on the up and up, and chances are if you are paying for a system like this you are paying primarily for the simplicity of things. So if you already have a ReQuest system, check and see if this is available for your particular unit, if you don’t but want one, the website is just request.com.