The 1.2.1 version of MediaExtractor for iWork for Mac was available to download on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The application lies within Audio & Video Tools, more precisely Editors & Converters. This Mac application is a product of torellasw. We recommend checking the downloaded files with any free antivirus.
From the developer:
With this program, you can easily extract media from your iWork projects. MediaExtractor let you extract all the media files you added to your iWork documents with a simple drag & drop. First you have to open the iWork document with MediaExtractor, or drag the iWork document to the MediaExtractor app icon, or open the document using the proper menu within MediaExtractor.
You may want to check out more software for Mac, such as PDF2Office SE for iWork 2, PDF2Office SE for iWork or Templates for iWork - DesiGN, which might be similar to MediaExtractor for iWork.