Keep in mind that in Windows, this is not supported. You can have a few devices and use DLNA and more but let's get this out of the way. -> NOT A NATIVE FEATURE.
Are you trying to duplicate a SONOS system?
I am trying to find a way to play multiple audio tracks from one computer and split them between different outputs/channels. The goal is to have different audio in multiple rooms but all the audio is controlled from one system or or computer
Very easy in windows too! Just get a free version of VLC portable player here: http://portableapps.com/apps/music_video/vlc_portable
Then you will be able to open up as many of the same portable player as you want and play different songs in each. Give it a try, it really works! Cheers
Light bulbs you shouldn't buy
There are plenty of dimmable LED light bulbs, but make sure you don't buy the ones that flicker when you dial them down.