iCloud and Multiple iTunes Accounts

I’ve been thinking about how to take advantage of this iCloud love and am afraid I may have some trouble. My iTunes account is really old and affiliated with an older e-mail address. When I joined .Mac so many moons ago, I created a separate Apple ID, my .MAC account (which later became my MobileMe account). This has never been a problem. I’ve bought lots of apps, books, music, and video with the old iTunes account and the MobileMe account handles e-mail, calendar, and address book.

So what happens now? If I convert my MobileMe account to an iCloud account it will see none of my apps, books, music, and video. If I want to use iCloud for my purchased content AND my MobileMe related data, how am I going to pull that off?

I suspect I’m not alone. We’ll see.