I have the playyan micro, which is great for mp4. I pretty much drag all my recordings to super (http://www.erightsoft.com/SUPER.html - no this aint' an ad, it's just the easiest thing i've used, though sound sometimes screws up) let it encode, and in the morning I've got well, whatever. I tried another device before that ran moonshell, and I really thought It sucked. the idea was nice, but the dpg file compression was nowhere near xvid/divx/mp4 in quality/size. Play yan got me that, but even the micro looks a little bulky on a ds lite. I don't think there's a play yan lite, really. Is there a device for the nds that can play mp4 (or similar class) video? Any way to use the full ds screen? I'm getting an r4ds in the mail. If I can use that all the better. Thanks!