iphone4 adapter to aviation headset?

[cgarr]

Wife just got me a new phone, its this apple thingy iphone4 and I want to plug it into my headset in my plane so I can use the phone and listen to music thru the headset.

I want to be able to speak thru the headset mic when making a phone call too. I have the plane wired with the two plug (mic&speaker) headset jack. Anyone have a way to make an adapter or know who sells them for these phones? I noticed this phone came with earplugs but the cord also has controls on it for volume built in, I dont know if this makes it more complicated or not?