Project Pad is a project at Northwester University to create a set of interlinked media annotation tools. They have developed an audio annotation tool, similar to Multimedia Annotator from the University of Wisconsin, Madison (see the kBase article on that tool). It allows the user to link text content (annotations of various forms) to specific points or sections of an audio file. However, it is also web-searchable, which promises to make said annotations eventually available to everyone, and could be a very powerful scholarly tool. Multimedia Lesson Builder (another product of UW Madison, see the kBase article on it) v2.0 is expected to be Project Pad compatible, as well.