Hey all. I was searching for the internet for that exact problem! I think i understand... My mp3 player looks like a ipod nano but it isn't. It's a not branded as well... The measurments on my mp3 player jack is the same as well. 2mm wide by 12mm long... Arg! Someone please please help! :PEdit: haha! search for 2.5mm earphones on a shopping website(eBays best)!