How do i get music tracks off a dvd into itunes?

Hey everyone- hoping i can get some advice here.
My laptop crashed last week and I am now on a brand new operating system (windows 7) using a Dell Inspirion PC. Ive lost all my old music off my hard drive.

I have a bunch of dvds a mate of mine burned for me back home that i brought to the USA, and i have no idea how i got the music off them originally and into itunes/on my hard drive.

I cant copy directly from the dvd to my hard drive as each song is encrypted. I know my mates password in the case that happens in itunes and it asks for it, but im not being given the chance to enter it anywhere.

Obviously itunes recognizes the disc and i can play the music in there generally, but i cant copy the music to the library.

Any ideas? Do i need to rip the music off the dvd and onto my hard drive first? If so, what program?

Thanks