I keep having to reconnect media (aiff) files to my FCE project. Initially I edit and store these files to my desktop, then drag to the browser, then drag from the browser to the timeline or viewer for editing. After deleting the original file I keep getting a media offline error and a reconnection prompt. Usually I cannot find it again. I therefore assume FCE does not make a copy of the file when I drag it onto the browser window. Where then should I save each media file to ensure I don't lose the connection with my project?