Some embodiments provide a computer readable medium storing a media editing application for creating multimedia presentations. The application includes a graphical user interface (GUI). The GUI includes a composite display area for displaying graphical representations of a set of media clips that are part of a composite presentation. Each graphical representation of a particular media clip is assigned to a particular row in the composite display area, where each row corresponds to a particular track in the composite presentation. Some embodiments of the GUI include a compression tool for assigning the graphical representations to new rows so as to reduce blank space in the composite display area, where the assignment of the graphical representations to new rows eliminates the correspondence between the rows and the tracks. Some embodiments include a collapsing tool for reducing a size of graphical representations in the composite display area.