Hi, I was subbing for a spin class instructor and when I tried to plug the audio cable in to my ipod there was a loud BOOM over the speakers. I thought it was a faulty ipod so I tried it with my android phone with the same results. There was another instructor there so I asked her to try (maybe it was me) and it worked fine for her, no BOOM. SO now I can't teach class b/c I am unable to touch the audio cable....any suggestions? There are no carpets in this room and there are 15 other instructors who do not have this problem, I guess I'm electrically charged?