I recently picked up a series of lectures on the history of Egypt that I absolutely love. Unfortunately, there are four of them at six hours long each, which leaves me relatively little space on my ancient iPod for my music, so I thought I'd burn them to CD to just keep in my car when I wanted them. However, I'm finding that most CD-Rs are only 80 minutes long, well below the six hours I need. Do longer CD-Rs exist, and where would I find them if they do?