This is a interesting thread to follow.
I have two itunes accounts but have mostly used only one over the years. I created both around 2008.
I just recently got signed back into one after a year or two of not touching it and was reminded that I had a decent amount of iTunes credit left in it I forgot about.
Apparently there's no way though to transfer that credit to my other itunes account, which really sucks and is annoying and frustrating.
More than ever with ios5 coming out and syncing purchases I want to just consolidate down to one account but I have no way of taking apps, movies and songs I've purchased in the one account and moving them over to the other.
What if someone tied an account to an email they know they'll soon no longer have access to such as a ISP provided email or work email?
Why doesn't Apple have a solution for this? Seems crazy to me.
Have you tried emailing them asking if you can merge the two accounts into one, or both of them into a third, new account?
Also, I think (I hardly use iTunes anymore since I got my latest phone) that if you use home sharing you can authorize the systems for both accounts and share the media between them. As for them syncing it to iDevices... no idea sorry.
