In the great digital era, we are witnessing many rapid scientific and technological developments in human-centred, seamless computing environments, interfaces, devices, and systems with applications ranging from business and communication to entertainment and learning. These developments are collectively best characterized as Active Media Technology (AMT), a new area of intelligent information technology and computer science that emphasizes the proactive, seamless roles of interfaces and systems as well as new media in all aspects of digital life. An AMT based system offers services to enable the rapid design, implementation and support of customized solutions. The first International Conference on Active Media Technology (AMT01) was held in Hong Kong in 2001, the second International Conference on Active Media Technology (AMT04) was held in Chongqing, China in May 29-31 of 2004, the third International Conference on Active Media Technology (AMT05) was held in Kagawa, Japan in May 2005, and the fourth International Conference on Active Media Technology (AMT06) was held in Brisbane, Australia in June 7-9, 2006. Following the success of AMT01, AMT04, AMT05 and AMT06, the Fifth International Conference on Active Media Technology (AMT09) will be held in Beijing, China in October 22-24, 2009. Active Media Technology 2009 will be jointly held with the 2009 International Conference on Brain Informatics (BI 2009). The two conferences will have a joint opening, keynote, reception, and banquet. Attendees only need to register for one conference and can attend workshops, sessions, exhibits and demonstrations across the two conferences.