Originally Posted by Carniphage
Tulkas, I am in exactly the same situation, as are many others.
I signed up for iTunes with an old email address. This became my first AppleID - linked to my credit card details. This account gives access to all my music, apps, developer status and anything which needs money.
Sometime later I got a Mobile Me (.Mac back then) account to do all the syncing and have a nice shiny Appley email account. This new ID is linked to my email, calendar, contacts, bookmarks and so on.
The very first thing I tried to do with my new official MobileMe ID was link it to my paid content. But that just wasn't possible. You can shift your paid content to any email account as long as it's not an Apple
Having two identities isn't so bad. But the upcoming iCloud is going to be a problem. The iCloud service involves both email identity and the iTunes identity.
Apple's created a mess here, which it needs to solve by allowing IDs to be consolidated.
I just got a reply from Apple. They will not be consolidating Apple IDs (and for those still confused, your MobileMe account is an Apple ID). I am trying to think through the ramifications and what workarounds might exist.
1)Use your old "iTunes" Apple ID to activate your iOS 5 devices and Lion systems for iCloud. Then you will have all of your media, apps, data syncing properly, as desired. But since this will also be used to sync info of the old MobileMe type data (email, calendar, bookmarks, contacts), this Apple ID won't have access to that data. Your only choice then would be to also add your MobileMe account as an email address.
2) Use your MobileMe acct to activate your iOS devices and Lion systems. Then all of your MobileMe type info will sync between systems, but your old iTunes acct would have to be separately added to the AppStore/iTunes.
I guess I either of these would be workable, since it is essentially what many of us do now. But the problem, as you mention, is that iCloud is supposed to consolidate all of these into a single Apple ID that you you enter when setting up the device. Being forced to use two distinct IDs takes away from the automatic setup that iCloud offers, especially to iOS devices. Also, there is the concern of some features not being available. If you choose to use your old "iTunes" Apple ID to set things up initially, will FindMyiPhone work or will it need to use your MobileMe ID? Since iCloud replaces MobileMe, will we have to use the MobileMe/iCloud ID to do the initial setup? If so, then when we add out "iTunes" AppleID to the AppStore/iTunes manually on each device, will it automatically sync apps and songs?