This just shows me that we really need to get to wireless ear buds soon. The headset cables either
destroy the look of tiny wearable mp3 players or they just always have a knot in
them when taking them out of the pocket.
Bluetooth audio headsets are either still too big or the sound quality is not there yet. Until then cable organizers seem to be the only way to deal with the damn cables.
More details on Akihabara and Rakuten (Japanese). See also the iPod shuffle car FM transmitter.