The "Download Now" link directs you to the iTunes App Store, where you must continue the download process. You must have iTunes installed in order to open the link, and you must have an active iTunes account to download the application. This download may not be available in some countries.
From The Big L Company:
The Manufacturing Innovation Event is the premier educational event for the manufacturing industry. Sponsored by the Manufacturing Extension Partnership Program, the event annually brings together representatives of government, industry and partnering organizations to showcase U.S. manufacturing. Targeted towards manufacturing practitioners, manufacturers and MEP Centers the event provides access to educational sessions, industry trends, keynote speakers and networking opportunities. The MI 2012 App will provide you access to session information, networking opportunities, speaker bios, presentations and other important conference updates.