I think I remember trying this once before.
You’ll have to ignore a couple of things I say in this video, since I forgot you can’t upload a 3D video file that was recorded with the 3DS to YouTube without processing it, first. I used Sony Movie Studio 13 Platinum.
You can watch this in 3D on your *New* Nintendo 3DS XL by going to the Internet Browser, then to youtube.com, and finding it there. If you can’t find it, ask your mom or dad to find it. 😉
Yup, the mono audio is totally stinky—I remember that, now, too.