Determining possession of original iTunes owner music files

[yourdream]

What will happen if someone got another persons' purchased music from iTunes and claimed them as their own? How does Apple determine the original file owner? What can happen if the original owner changed/deleted their email and someone else created that same email address? I'm concerned about these problems because when music is brought on iTunes there is no proof of purchase given to the customer other then their name and email address, which does not change if any information is changed.

 

[aristobrat]

I don't think it's as simple as that. You can change the email associated with your "Apple ID" as much as you want, and stuff you purchased when your "Apple ID" had that different name works just fine. If they do it like others do, there is a unique identifier that correlates to your Apple ID (that you never see). So you can change the text of your Apple ID as much as you want, ... it's still owned by you.