So it looks like I can't change my XBL email to my new, @outlook.com address, due to the account.live.com site not being updated to add the @outlook.com domain to their whitelist or whatever.
So, I can't use my Microsoft account with the music, game and video apps until they fix it.![]()
Maybe I missed it but did you try going to outlook.com with your current live id. After signing in go to the settings icon and click on more email settings. From here go to rename email address on the left.
Edit: or maybe I didn't read that right and you are trying to combine them?