Ed, back in November I got a cheap waterproof plastic case for my iPod Touch from iFrogz (http://ifrogz.com/) called the iBagz. When I made my order they had a deal for some earphones. When I got them I saw that one of the earphone cords was three times the length of the other so that one earphone could go directly up to one ear and the other could loop around the back of your neck. This sounds exactly what you are looking for. Unfortunately I just checked their website and they don’t seem to list any earphones, but at least it seems that there is a style of earphones that is designed to do what you want. I will have to go through my collection of old receipts and see if I have any info on what these earphones were called and who made them. It seems that the reason that there was a special offer on these earphones at that time was because they were planning to drop them.
Sorry to not be of more help.
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"Everything you know is wrong."
Firesign Theater
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Michael Logue The Grateful Union
http://www.earthguild.com/ Earth Guild: Tools Materials Books
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