http://www.stormcam.org/male-adapter/

USB female to 3.5mm male adapter? (For the iPod Shuffle)?
My headphones have finally broken, I think they are 3.5mm male? I want to use a helmet now. I put a USB headset I use my computer so maybe I can use? But since they are USB, I need a USB socket for receiving a male 3.5mm jack for iPod shuffle. Google does not help date … Does anyone have another site that sell this card? Shop?
I do not think it would be possible. The headphones are most likely to have onboard sound and would not be possible to convert to a 3.5 mm jack.
PEX Fittings, #06848: MALE ADAPTER 3/4″ X 3/4″ MPT