I've been doing a bit more walking these days, trimming up for summer and saving on gas. I decided I would walk faster with some sounds. I already have my iMate SP5 with a 2 gig flash card and media player on it.  However the standard ear plugs that come with the sp5 look and feel like giant silver bolts. 

Then I saw these blue tooth stereo headsets.  

SP5's sourced from VodaPhone in New Zealand don't include the stereo blue tooth features that the SP5 is capable of.  For these to work, your phone must support A2DP - whatever that is.

What you'll need

1. Get the instructions and discussions here: http://forum.xda-developers.com/showthread.php?t=263735&highlight=a2dp.  The download (tornado_a2dp.zip) is linked from the first message in this lengthy discussion. 
2. Open the zip and read the readme.txt. 
3. You can get most of the tools listed in here from http://wiki.xda-developers.com/index.php?pagename=ApplicationUnlocking.
4. You may need to unlock your phone.  You can get those tools and instructions from here: http://www.spv-developers.com/forum/showthread.php?threadid=620. 
5. The tornado readme says you can import the .reg file using MobileRegistryEditor, but I couldn't see how to do this - there is only an export option.  So, I had to manually edit the registry.  BE CAREFUL - BE VERY CAREFUL! Do an export of the registry before changing anything. I neglected to do this or even write down the original values before changing them but I got lucky. 

Now, I'm completely confused by most of this but I can follow instructions and thankfully, once you find the correct information and tools this works pretty well. I did have one scare.  After restarting my phone at the end of these instructions it froze while loading the SIM card pin number input.  A battery removal restart fixed this though.  Phew!

The headset has good quality sound, is very easy to use and the battery has lasted for 2 days so far.  You charge them with a USB cable and they include a nifty charger with a USB connecter and cable - useful for many USB devices I think.  The right hand ear has controls to play, pause, answer call, go back and forward a track and change the volume. 

They do cut out occasionally while I'm walking around town, but I find that if I have my phone on my right hip or in a top pocket then this doesn't happen nearly as much.  Sitting in the car or at my desk listening to music is just fine. 

I've also found that if you answer a call using the button on the headset then music will not resume after the call ends.  In fact, starting the music from the phone does not work either.  It seems to loose connection to the headset for music only.  When this happened the first time I turn off blue tooth on the SP5 and the music started playing through the phone speaker, so it was in fact running all the time.  However, if you use the phone to answer and end the call then the music restarts as you'd expect.

The quality of phone calls is also pretty good.  I do feel like a complete dweeb talking without holding a phone to my ear, but you quickly get used to this.  People I have talked to on the phone say they can hear me ok, but there is a bit of transfer or wind and traffic noise.

You can get the i.Tech BlueBand R headset for $160 from flashcards.co.nz, who, by the way, have a fantastic service.

And thanks to the guys at GeekZone.co.nz - it's the best resource for this sort of phone hacking.