I am one of the main developers of the minecolonies mod: http://www.minecolonies.com/welcome
Minecolonies is a mod which adds a player owned colony to the game.
The colony consists of various workers and mechanics, blocks, sounds etc.
We have a lot of plans and a lot of content which needs to be added to the mod.
Unfortunately, it's hard to find active people to help out with our mod.
We need modders and sound creators. (Recording worker specific sounds, ambient sounds, etc).