Bluetooth Audio Gateway System

Question

  I want to develop an audio gateway system in c sharp.That is,if i play a song in my mobile which is connected to my computer by Bluetooth..i can hear it from my computer's sound box or headphone.I did search in google but not found so many helpful contents.Anyone here have a idea how can it possible? Especially code examples or any helpful links for this content should be preferable.I use windows 7.