Selecting "File References" from the Sequencer's Sequence menu opens a dialog that lists all files referenced by the sequence. This includes the media file, the background image for the preview, subsequences, and files used by motion effects (e.g. Movie and Picture effects).
Files that don’t exist at the specified location are listed with a prefix of “*** missing ***”. This is an indication that the file reference should be fixed.
Subsequence and motion effect references can be fixed with this dialog. The media file can be fixed using the Media File item on the Sequence menu. The Preview Background file can be fixed in Preview Design.
To specify a new location for one or more files, click the check box next to the filename(s), then click the Change Directory button. You will be prompted for the new location. Note that this function does not actually move the file(s), rather it updates the effects that reference those file(s). This can be useful if you move your sequence directory.
The File References dialog