Need an adapter and don't want to shell out big bucks
to pick one up? Apparently Apple's own iPod Shuffle Sport Case includes an adapter that fits the bill --and iPhone's slender port -- perfectly. Of course, the value add here is that these fellas are all but discontinued, so if you are speedy, you can likely gank one on eBay for under a dollar plus shipping. But hurry up, when the sellers catch word, there is no doubt that price will skyrocket.
[Thanks to everyone who sent this in]