I actually buy Cathe's mp4s because I can use them with the workout blender. For other DVDs, I use Handbrake to rip them. You need to have a program like Anydvd or DVD43 to remove the copyright protection. Handbrake can handle the rest. Make sure you keep all the original dvds in order not to violate copyright protection laws. Handbrake will keep all the chaptering if you have an mp4 player that recognizes chapters or using a program like Quicktime on your computer. I'm using a Sony blu ray player which doesn't. If a DVD is not chaptered well, down to the basement it goes. I only buy them now if they offer something unique enough to bother.How do you rip Cathe's dvd's and put the mp4s on a hard disk?