This is more of a general DVD question ...
How the heck are you supposed to get the DVD out of some of those plastic cases? I have been purchasing DVDs occasionally for the past couple of years (even though I didn't have a DVD player when I started), and out of the 40 or so I've purchased, there are at least half a dozen different types of black plastic cases (the inside part, anyway). With most of these, you're supposed to "press down" on the black button (or tabs) in the center, which holds the DVD in the box.
The problem I've found is that most of these still don't release the DVD. I've tried pressing with my thumb, screwdriver, you name it. Last night I was trying to remove "The Company of Wolves" from the package and had to literally bend the DVD to get it out. I've had to do this with about a dozen of my DVDs, and I've read that bending a DVD is the worst thing you can do to it. Yet I've never seen my problem addressed anywhere.
With the package I was dealing with last night, after I'd finally gotten the DVD free, I looked closely at the tab/button thing, got down at eye level with it under a bright light, pushed down with all the might in my thumb -- and it didn't depress or move the tabs a tenth of a millimeter. I finally got out a pen knife and cut off two of the three tabs. Amazingly, the one remaining tab is still enough to hold the DVD in place, even turning the box upside down, the DVD is held in there securely. That's what I call a firm fastener.
I'd say that, out of all of my DVD packages, with only about half a dozen of these did the DVD pop out or lift out easily.
(P.S. I haven't purchased any of the DS DVDs.)