Need help with Itunes on basically new macbook!

So my hard drive failed and i backed up the computer. Trying to put my music back on the comp but i think i am ****ed.

I put my music into my library..but now to play it i need to authorize my computer. Heres where the issue is...it's saying i need to authorize it with my old old email...that i don't even have anymore. I used my new email when i got the mac..but now it won't take the new email..keeps asking for it for the old email which i don't have anymore..what gives? I can't authorize anything on itunes and can't transfer purchases...umm what should i do?


Or is there a program where i can get everything off of my iphone to my itunes...but it would still probably need to be authorized right? This sucks..i knew this would happen

 

Thing is..i don't know the password..and when i try and reset password...my date of birth isn't in there for some reason.....do you think if i talked to apple support they could help me find it?

Also..if say i downloaded the app to take the music off of my iphone to put on my itunes...do i still need to authorize it..or no?