Is there a way to use computer as speaker for iPhone, like docks?

[powa]

I know there are docks selling on the market, which bascially you put the ipod/iphone on the docks and it will play the music or whatever it's playing on the dock's speaker. I am thinking if it's possible to connect to the computer and use computer as speaker to play the content of the iphone? and which it is able to play internet tuner radio, mp3 and everything?

[charithrac]

yh u can, but need to have a line in port on your pc, so audio can come in. Its usually black coloured.

[Niner1000RR]

Yup, that's what I do at work!