Here's a useful combination: OA audio file of the spoken word + speech recognition software + search engine.
Two MIT researchers have made OA lectures much more useful by making them searchable. They've set up a prototype for searching audio lectures within the large collection at MIT's Open Courseware.
The open access movement:
Putting peer-reviewed scientific and scholarly literature
on the internet. Making it available free of charge and
free of most copyright and licensing restrictions.
Removing the barriers to serious research.
I recommend the OA tracking project (OATP) as the best way to stay on top of new OA developments. You can read the OATP feed on a blog-like web page or subscribe to it by RSS, email, or Twitter. You can also help build the feed by tagging new developments you encounter.
