I have a MAC laptop and a 16 GB Apple ipod. I want to ask that all normal laptops, desktop systems and audio player only has one headphone jack. If a someone want to add more than one headphone to the player then what is solution for this. I had seen that only Dell laptops have a dual headphone jack in them. But what about the other tools. Is there a way by which I can use more than one Headphone on a single machine. Is there a specific hardware for this.