Locked out of my old Apple ID.
My first Apple ID was based on an old e-mail account that I no longer have access to. I used this Apple ID to purchase songs on iTunes from 2005 until 2012 (625 purchases). Since then, I have been told my password is incorrect and I need to reset it. However, I can't receive the "reset" e-mail as I don't have access to that account anymore. When I attempt to reset using personal details, the website tells me I have entered the wrong date of birth! Customer Support say there is no way for them to verify my identity (even though I still have receipts for my very first iTunes purchases). This means if I change computers in future I will be unable to authorise it to play my old purchases. I have since opened a new Apple ID for my more recent purchases; however I don't want to lose all my old music. Is there a way I could burn a "super CD" with all my music on it then rip it back on to iTunes so it won't require authorisation in the future? Grateful for any suggestions.
MacBook Pro, Mac OS X (10.7.5)