help regarding audio streaming over Bluetooth

Hi,

I am a new member of this group and currently, as a student, I'm
working on the development of a Bluetooth demonstrator for MP3
streaming between a PocketPC (Windows CE) and PC (Windows XP) with
headphone.
The PDA will be the initiator and the PC the acceptor.

I will use A2DP to stream audio but I'm still learning about
Bluetooth, so I would like to ask for pieces of advice and suggestions
on how to implement that. Particularly I need a MP3 codec which will
interface with A2DP and I don't know how to do that.

Notes that I have to use the extendedsytems stacks which contains
audio/video profiles.

Thanks for your help

Regis