Sony Ericsson should thank me for boosting their sales on these headphones lol 
I loaded OS 4.0 Gold Master on my 2nd Gen iTouch, (don't own a 3GS, otherwise I would have tried it) I saw the original thread in these forums stating that these headphones don't properly, well I was happy to report they work fine now with 4.0
Those of you familiar know the volume controls don't work on OS3.X and stays at maximum volume at all times. 4.0 is a big improvement overall and in this department as well.
P.S. before asking me where I got 4.0 a simple search and you will find your answer, though I recommend you wait till the official release as mine is missing the wallpapers for some reason.
Here is my video to prove it, btw, the postit was to cover my serial #
http://www.youtube.com/watch?v=KNxu2Me-H74
I loaded OS 4.0 Gold Master on my 2nd Gen iTouch, (don't own a 3GS, otherwise I would have tried it) I saw the original thread in these forums stating that these headphones don't properly, well I was happy to report they work fine now with 4.0
Those of you familiar know the volume controls don't work on OS3.X and stays at maximum volume at all times. 4.0 is a big improvement overall and in this department as well.
P.S. before asking me where I got 4.0 a simple search and you will find your answer, though I recommend you wait till the official release as mine is missing the wallpapers for some reason.
Here is my video to prove it, btw, the postit was to cover my serial #
http://www.youtube.com/watch?v=KNxu2Me-H74