I'm about to pull the trigger on my 20GB iPod purchase but I'm wondering which accessories I should buy with it. Specifically:

--If I already have a bag full of adapters for use in every country on the planet, do I need to shell out for the iPod's $39 set of international adapters? Is there a power cord that I can just plug into my existing adapters? (And: even the iPod set does not include a plug for South Africa and their nutty outlets--what do I do for these trips?)

--For playing the iPod in the car, the NY Times Circuits section recently recommended the Sony cassette-player hookup, which Apple sells as an iPod accessory. Is the $20 price from Apple decent, or can I get this cheaper elsewhere?

--I want to listen to the iPod while running. Should I buy the in-ear headphones? (My head, like the rest of me, is small and I often have problems with headphones being too big and falling off. Will the in-ear headphones stay in place any better?)

--I want to listen to the iPod while running, part 2. Should I buy the $39 belt clip carrying case or is there a better and cheaper option for this purpose? Like the belt pack I already own, for instance?

--Do I really need that $79 kit to attach the iPod to my stereo (which is so lo-fi that a Monster Cable would laugh at it), or will any old connector wire do the job? Is the output jack for the iPod unique enough to require a proprietary cable?

Thanks to the experts for your help!