.Mac and iTunes

The upgrades that Apple has made to the dot Mac service are good, though a long-time coming (however, anyone else notice that Hotmail upped their email allowance, as well as allow email forwarding, right on the heels of Apple’s announcement?). I would like to see some additional features, though. Particularly, I would love to see a greater integration with iTunes. One idea I had was the ability to carryover any customizations from one machine to another. Also, it would be great if we could store all of our music in one place and listen to it on multiple computers. Dot Mac would be a great way to facilitate that.