iPod Line Out

So I'm a little confused with all the talk about the new iPods requiring new cables and docks. I'm going to buy an iPod touch sometime this week. I want to be able to play it through my stereo and watch movies on my tv (which requires composite cables). I have the original universal dock hooked up to my stereo along with the original cables (the red yellow and white). Will my setup work with my touch or will I need to buy new docks and cables?