As Apple devices rapidly migrate to Lightning cables, you may have a few 30-pin docks with speakers around. While you could use something like Airfoil Speakers (a great app, I might add) to push sound around, attaching a US$300+ device to an old dock seems excessive. Enter the Auris Skye -- a small device with built-in WiFi and a 30-pin connector that will allow you to set up your dock as an AirPlay speaker.
The Skye itself is much smaller than an iPod touch, and surprisingly light. It needs no battery, and has one LED on top to indicate whether it is broadcasting or not. White means yes, orange means no. Setup requires attaching the Skye to a dock, waiting for the white LED to sto
