Hi appleblossom,
Omg, I so empathize with your original post! DS6 has always been that way, and DS4 is not that far behind. I don't know if anyone has posted about this, but we've found that audiobooks are an absolute lifesaver. We use them in the car but even if you don't drive, they might still work at home (or heck, with headphones on the bus or whatever).
We started off getting some from the library for longer trips, but I now keep a steady supply of them in the car even to get around town. That way, we know that we can get a break from the incessant talking as soon as we get into the car! They've been listening to the Magic Tree House books and we're now on book number 44. When we get to the end, I think we'll just start over again. Or maybe they'll be ready to move on to Roald Dahl or something.