http://www.scosche.com/products/productID/1667
You need something like this to get new iPods to charge off of cables that provide power over via firewire. Personally, I use my old 3rd Generation 40GB iPod in my car, it has four separate buttons so it's easy to use without looking. 40GB is plenty for just music, and it can be charged via FW.
Porscha
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