link to it http://forums.bukkit.org/threads/dev-spout-1-0-1-unleashing-the-flow-of-endless-possibilities-1000.29259/page-2#post-533304
In the future the server will block anyone who doest have spout client mod, so i made a tutorial on how to install it.
1. first thing download spout here: http://goo.gl/d81MA
2. go to start and type %appdata% and press enter. navigate to .minecraft/bin/minecraft.jar
3. open minecraft.jar with winrar
4. drag and drop the contents from spoutcraft-dev-SNAPSHOT-MC-1.7.3.zip into minecraft.jar
5. close and run minecraft
For Mod users
if you have flymod or any other mod you will have to copy the files from /.minecraft/mods/ into /.spoutcraft/mods/ for them to work
.spoutcraft will appear after you run minecraft with spout installed for the first time.