I haven't used them in a couple weeks and tried to use them today but I don't think the transmitter is transmitting. I can't hear any sounds coming out of the headset. Fresh batteries, all volumes are turned up, I've paired it up 100x, I hooked up an MP3 player to the RCA jacks on the back of the transmitter and still got nothing. Optical cable looks good, still shining the red light out of the end.. I have no idea why this is happening. Any help would be greatly appreciated!