Bumping an old post. Was actually searching for info on how to DIY THIS . Headset Portable Music Adapter ...MILITARY. US Coast Guard, 2002 to present. Crew on HC130H's as a loadmaster, dropmaster and senso. Also maintain em...mech side. Been stationed in Kodiak Alaska on a boat, before I got transferred to the aviaiton side there, then I went to Florida and logged many many many many hours flying around the Florida straits and Central America wishing there was a better way to listen to music over our intercom line. Now I am at Barbers Point in Hawaii.