The Apple iPhone doesn't support A2DP, which allows users to transmit stereo audio to Bluetooth headphones. However, Earle Davies, a reader from tuaw.com has found a way to make it work... to a certain degree.

We say to a certain degree because while you can get the music and sound to stream to the headset, the iPhone still plays audio though its built-in speakers at the same time.

If you still want to try it, switch on the headset and wait for your iPhone to recognize it. Once it does, go into the Visual Voicemail screen and tap the Audio button in the upper right.

You'll receive an audio selection dialog that lets you choose where to send the iPhone's audio. Select the Headset option, switch over to the iPod, play some music or a video and there you have it. Your iPhone is now streaming music to the headset.

Hopefully, Apple will develop its own A2DP bluetooth headset that will allow users to listen to their music on a headset. Until then, we'll probably be stuck with workarounds like this unless some enterprising coder can work out a way for us to do this much more easily.