USB adapter and 3.5 mm cable came along with my headphone, the USB adapter has a 3.5 mm jack for the cable. i plugged the adapter to my LCD along with the cable to the adapter, the other end of the cable doesn't seem to fit anywhere in the TV. I've digital optical output in TV, is it possible to get my 3.5mm connect to optical via adapter or a cable ? sorry if this sounds stupid, im totally new to this world. Thank you