Workbench Media provides integration between Media module and the Workbench suite. It simplifies the pages content administrators need to visit in order to add media.
Which version should I use?
The current branch of Media you are using should be the same branch of Workbench Media that you should use. For example, if you are using the Media 7.x-1.0 release, then you should use the latest Workbench Media 7.x-1.X release.
Workbench Moderation adds arbitrary moderation states to Drupal core's "unpublished" and "published" node states, and affects the behavior of node revisions when nodes are published. Moderation states are tracked per-revision; rather than moderating nodes, Workbench Moderation moderates revisions.