If you USASpec kit for the TL, which allows you to use your ipod, could you use a video ipod and play your movies on the TL nav screen? Or do I have to still use a third party DVD player?

no, since the video is not transmitted via the usa-spec. I think you would need valorlink or something like that along with dom's nav-to-go converter

I think if you have the video iPod with the adapter cable, you can just use Dom's TVandNav2Go with an aftermarket audio interface and you should be set. I thought someone on here posted this some time ago. Someone want to confirm this? I just have a nano.