If it never occurred to you to plug all kinds of peripherals into your ear cans -- including the media player making the sound -- a new patent from Redmond's brain trust might give you pause. The headphones are shown as a catch-all, with receiving spaces for snapping in devices like rechargeable battery packs, storage, Bluetooth or WiFi reception modules and media players -- such as the Zune-like one sketched in above. The headset could also have controls to operate those peripherals, as well as an optional boom mic and USB ports, according to the document. All this is claimed to allow for numerous configurations, letting you pimp your headset to fit your own needs, and interface with games, movies or music in various ways. If they ever get to market, you might start thinking of humble headphones as full-blown entertainment centers instead of mere accessories.