Streaming music over network?

[LeperousDust]

Not really sure if this should be in Audio or here since its quite technical.

I need a program (don't think VLC will do this out the box anyway) to stream whatever i'm playing on this computer music wise over a network. So whatever music program i use that uses directsound i want to be picked up and multicasted or however.

Also i wouldn't really like any lag, so i was thinking i could mute the default audio player and have a copy of VLC running in the background minimised playing directly to my soundcard bypassing directsound? So the main computer also experiences the network "lag".

Any idea if this is possible? I'm fiddling around with VLC and i can obviously have that mutlicast its own playlists and files (norton on a few PC's is being the usual PITA though). But i can't get VLC to use the directsound a an input...

//Edit: Or any other method of duplicating whatever is played on WMP or iTunes on one PC over about another 2-3 over a network (wireless unfortunately but it shouldn't be that bad, it's only audio anyway)... Long story short we've got a party coming up and me being a bit of a (failing) geek i want to have the music all co-ordinated instead of a mishmash around the house...