iPod owners and Creative alike are well aware that simple audio and video docks can be had for $29 or $39, depending on the iPod model, so it’s a given that the Xdock needs to more than they do to justify the $200 asking price. The list starts small, then gets bigger: in addition to a top-mounted Universal iPod Dock, it includes a really nice Griffin Powermate-style illuminated metal volume knob, an auto-switching optical and audio audio output,…