Basically that's what I'm curious about doing. This is probably a borderline hack/iPod question but here we go.
I've got a 30gb iPod video, and the only means for charging it is either to hook it to my mac, or to the charger in the truck. Sometimes I listen to it in the house at my desk and on the rare occasion it isn't charged. It sounds better than the headphone out on my speakers for some reason. What I'm wondering is, I have a USB extension cable that I'm not using. If I cut the data contacts off and hook my USB data cable to that, then to my mac, will I blowup the iPod? It sounds like I wouldn't, but I'd rather not fry the iPod doing something like that. Also, what are the pinouts for a USB port? If not I'll just buy a charging brick, but that's $20-30 I don't have at the moment.