Does anybody know if any companies (or indeed, Apple) have come up with an Airplay adaptor for current docks? Basically, a small device that plugs into the dock connector of a current non-Airplay dock that then acts as an Airplay receiver. Would be a nice little £20-30 add-on if you've already got a nice iPod dock and fancy dabbling with Airplay. The beauty would be that the dock connector would provide it the power for the wifi connection. Of course, I'm sure Apple would much rather you bought an ATV2 (and probably a DAC), but surely someone can see there's money to be made here?