Ok first off I play Water polo, so today when we were swimming i was thinking. How can i listen to music while swimming without wires? While swimming i thought about those Pens that have radio receivers in them and how to modify them into an earbud headphone. solder the receiver with the earbud and battery. Then change the frequency of the receiver to whatever. If they come out with wireless psp transmitters like they have for I-pods then change it to whatever frequency you choose to use. So there you have a wireless earbud Playing all your songs with your Psp or Ipod in your bag or pocket or whatever. The only problem for me is making it water proof O.o. As of right now im busy and cant try this out but i will asap and ill post results. If you have suggestions please post them.