Apple Final Cut Express HD - Manual (Page 410)

410 Part VI Rough Editing
To slip all out-of-sync clip items into sync with the anchor item:
1 In the Timeline, Control-click the out-of-sync indicator on the anchor clip item—either
the sole video item in a group of linked items, or the topmost audio item if there is no
video item among the linked items.
2 Choose Slip Others into Sync from the shortcut menu.
Before syncing
After syncing