How to automatically select the organic group audience when adding content? How can I setup a link on a group page to add content that automatically selects the group audience as the referred group?

For instance:

I'm a member of the group "Puppy Kittens" and I'm logged in to that group page (node/12) and I have links on that page to "Add Post". The link "Add Post" opens up and allows me to add a post for my group without me having to select my group.
OG group extras


  Extra functions, blocks, and views for Organic Groups 7.2. In
  particular, this module adds views and blocks needed by sites that are
  not using Panels.


This only works on OG 7.2 but not on OG 7.1. If you are using OG 7.1, you can use panels and add a create group content panel to the node page.