I was listening to music on my 3DS with headphones, but sometimes, the music only goes through one ear so I have to adjust the wire so the music goes though both ears. Thought it was just my headphones so I bought new ones. Apparently, same thing happened with my new headphones. With all my other devices, my old headphones work fine. My 3DS is the only device that has this problem. So what do I do? What's the problem here? Help is appreciated.