My friend and I have two Macbook Pros, each with an LED Cinema Display being used for audio. When my friend listens to music I can't hear it as well as him, because I am in front of my own machine.

I would like to set things up so when his computer starts playing a sound, my speakers should start to output the sounds too, so that both computers are playing the same audio synchronized. This way I could hear better.

Is this possible somehow?