A computer-implemented method includes displaying, within a user interface in a digital media system, a media pane and a tools pane, displaying, within the media pane, a thumbnail group representing a media item, the thumbnail group including one or more thumbnails, displaying, within the tools pane, a tool configured to assign a keyword, enabling a user to select a segment of the media item, and enabling a user to assign a keyword to the selected segment by activating the tool.