In this demonstration, we present an image retrieval system to support multimedia authoring and presentation. An affinity-based mechanism, Markov Model Mediator (MMM), is used as the search engine for the system, which utilizes both the low-level image features and the learned high-level concepts via user access patterns and access frequencies. This system is one of the major components of MediaManager, a distributed multimedia management system developed by us. Both retrieval, and learning facilities are supported in this system. The retrieval system also provides input information to the Multimedia Augmented Transition Network (MATN) environment for multimedia authoring and presentation.