Extended Systems Bluetooth stack

Hello,

Is someone have ever used Extended Systems Bluetooth stack and
audio-video profiles on a iPAQ from Compaq (H3900) with Windows CE? If
yes, I would like yo know if there are any conflicts between original
stack and Extended Systems stack.
My project is to do audio streaming (typically an mp3 file) between
the iPAQ and a PC with a dongle Bluetooth and Extended Systems
Bluetooth stack by using audio-video profiles from Extended.
If someneone have ever did a similar project, I would be glad to
exchange some pieces of advices.

Thanks