In a synchronization or back-up system that synchronizes and/or back-ups files from multiple computing devices, the present invention provides a method for (1) displaying files from multiple computing devices in a multi-view user interface and (2) enabling content and file operations to be performed on such files through the user interface. The multi-view interface includes a file-system view and one or more media-specific views. In the file-system view files are organized in the same way in which they are organized on the devices on which they are stored. The file-system view in the interface looks essentially the same as the file-system view on client devices. In the file-system view, users can perform file operations on files. In the media-specific view files are organized by media category. In one embodiment of the media-specific view, files are organized by metadata that relates to the files content. In the media-specific view, users can perform content operations on the files.