[Chris Kenny] "(there's "Audi", but the icon makes me think that's just a collection of footage)"
What you are calling "a collection of footage" is what Apple calls an "Event" (hence the Event Library) ... this same Event icon is used in iMovie '11.
Question: Whats that little icon up in top left of the filmstrip for the above selected shot (Phantom Ahead) ? It's not shown on all clips and the icon in the detail view is similar and also reflects the same disparity (not the same as the other "clips" in that list).
It looks a bit like a clip with attached audio as seen in the timeline ... I'm thinking it may denote a clip that has linked second sound audio via FCP X's pluralise type thang (or perhaps some other form of "Merged" clip).
