I was hooking my DS and PowerBook up to one speaker system with a new 'y' adapter that I had just bought, and I heard Bon Jovi coming out of my DS!!! I had the cable plugged halfway into the headphone jack on Advance Wars DS and It was coming out garbled at full volume. The slider for volume only affects the game music coming out, which was pretty much drowned out by itunes. Im thinking it' kind of like the iPod's video out...Any cable will work, but the things inside are switched so that they are only supposed to be able to work with a certain cable. Can anyone else confirm this? Or is my DS just defective? Will Metroid Hunters be the first game to include the headset??? Or, can anybody figure out how to make it not sound garbled??