Use Phone as computer speakers..

Hey,
I don't know weather i should post this in this section but still...I have bought a new phone(Nokia ExpressMusic 5800) I have already started using this as a webcam with epoccam...now i need some kind of app that can turn my phone into speakers for my pc..?? Does any such software exist??

i already tried Mobiola Microphone...but it doesn't work for me