...RelaXX includes features like keyboard-control, drag and drop, context-menus, sortable tracklists and more using JavaScript. Can be used as a public jukebox for MP3 or OGG. The server uses PHP.
EtherPipe is a server for Multimedia-Metadata as central library for local (inhouse) lans media-server solutions. Serverside uses JavaEE/GWT/(/MySQL), Clientside uses Google GWT. The project is currently in rework - please visit again in October 2010
Primedial is a web-based media database aiming to provide a "Web 2.0" user experience, cross-site media info sharing, authenticated and anonymous access, streaming of stored media, and control of media players on the client as well as on the server.