Audio server and Wake up

Hi folks,

My primary box goes to sleep, and the network card remains up and running (per choice).

That box is (also) acting as an audio server. Being on sleep, Multiplicity stops receiving the stream.

How can I either A) "keep it alive", or send a "Magic Packet" to the network card so it wakes it up when audio is played, or C) Prevent Sleep if audio is being played?

Thank you!

Your loyal customer