In this paper, we present a personalized multimedia content delivery system dealing with both user preferences and terminal/network capabilities. In order to ease interoperability with third-party applications, content annotation, user preferences handling and terminal/network capabilities description are managed by MPEG–7 and MPEG–21 standards. Offline content adaptation and annotation tools are proposed for content preparation. Content delivery is handled by a client-server architecture. This architecture is built around custom personalization and adaptation tools, and a commercial content streamer. The proposed system has been used to provide Universal Multimedia Access within the EC–funded R&D project PERSEO.