[Simon Elkrief] was tired of waiting for manufacturers to produce a set Bluetooth stereo speakers so he built his own. Stereo over Bluetooth is handled by the A2DP profile which isn’t very common. Simon had to perform a registry hack to activate it on his HTC Wizard. OS X still doesn’t have support for it. He used the Bluetooth receiver out of a pair of broken Logitech headphones and wired it directly to a set of powered speakers. Now he can stream stereo sound from his phone to the speakers. He plans on developing an even better set in the future.