Digital signage systems have found many interesting applications in the areas of advertising, entertainment and education. There are a variety of digital signage architectures in use. Through this paper we present Infoshare, a distributed and scalable multimedia signage system. Infoshare is based on the architecture of a collection of autonomous signage players connected with servers via a web service interface. The signage players display XAML based screens with rich signage contents which are scheduled based on location and time. This paper provides an overview of the Infoshare system that is deployed as the news signage system of Graduate School of Media Design, Keio University.