A buddy in IBM Software Services for Lotus – Germany, Robert Schneider, wrote a nice article about plug-in development and using the IBM Multimedia library. This uses a Features and Plug-in widget to assist in the deployment of the newly created Eclipse artifact. It is a great tutorial for how these things are connected and then deployed.
This article explains how to create an extension for IBM® Lotus Notes® 8.0 and later that allows you to open a preconfigured URL (for example, Lotus Notes Multimedia Library) in a newly opened browser window by selecting a menu entry in the Help menu.