I would love a similar application for few reasons:
. No other headset to charge, pretty cool i must admit
. you can use a normal 3.5mm jack, 4-pin mic you usually get with some mobile phones to have working ps3 BT headset
. . you could use normal headphones for listening to video/audio on pc or PS3 without a cord going to the computer/ps3 [but no mic on ps3 during lan play]
. for those wanting a bluetooth throat microphone made from scratch, you don't need to hack a a2dp bluetooth handsfree kit, just to make a 3.5" 4-ping plug + adapter [or your phone plug]
You can actually achieve more or less similar with an a2dp bluetooth small handsfree kit... I actually wrote a piece on what i want to achieve here [throat microphone, talking about bone conduction a bit]:
In the end, you need an hacked rom to overcome the bluetooth stack limitation of some handsets if any, and a program that act as handset server profile.
BlueputDroid would be the best contender for this jobs, as it allready pose as bluetooth server profile... [http://forum.xda-developers.com/show...940511&page=21