John Olinda Textbooks should just come with a QR code instead of a CD in the back. Less plastic wasted. Of course then you have to maintain a URL for the files, but that will last at least as long as CD drives.

Mark Dain None of my computers have a CD/DVD drive anyway so I couldn't even read that if I wanted to.

Eric Portable plug and play DVD RW are super cheap and available now so this isn't a huge issue.