DVDs or CDs in auto collision

I was just thinking about the hijacking by Mike, with me and Monica in the car, and the only things we knew he had brought with him were some clothes, one book, and a huge case of DVDs and CDs. We asked what this enormous black folder with a zipper was and he said it was his DVD collection and it was huge. He didn't bring anything else. I found out after the wreck he played guitar but he never mentioned this or brought it. He brought nothing but a few clothes, a huge DVD/CD collection, and one book called "The Rise and Fall of the 3rd Reich". That was it. So I was then wondering if the CDs mentioned that Diana had with her in the car crash were CDs or DVDs and what was on them.