Songs w/ different Authorization Counts

So to add to the info, I tried deleting SC Folder already; didn't work.

When I attempt to authorize, system told me that, "this computer has already been authorized (2 out of 5)." Strangely enough ,the same message appeared from my previous desktop, which was two computers ago.

I use the same Apple ID... kind of. Originally the ID was at "mac.com", which has been long changed to "me.com'' when they abandoned the old name.

How do I do that?

The Manage Devices option is not on the list O_O Although I did see the DeAuthorize All option, except it says I cannot do it till November 2015.

When I sync the phone, this is the exact message, "Some of the items in the iTune library, including X, were not copiers to the iPhone Y because you are not authorized for them on this computer." The odd thing is, it kept on telling me that my computer is already authorized.

Is there a way to combine them? Because one account is mac.com, the other is me.com, which should be the same account now?

EDIT: And I just tested, not working 😟

I will contact them then.

Is there a way to know which account a song is authorized to?

Thanks for the quick reply.

If I cannot combine the accounts, how do I get songs from two accounts onto a phone?

Yes, they are all in my iTune now, just that they cannot be synced to my phone. Do I have to log into the old account and from there grant permission to use those songs in my new computer/phone?

Side topic: I think Bruce Willis had an issue with this problem previously where he couldn't pass on his huge collection of sons to his children for the same reason.