In vidding, I think remixing is when you take a vid that you made to a song already and putting a different song over top. greensilver's Ghost Song Isn't Crying is a remix of Ghost Song. Some people call it a mashup too. I love that we pillage other areas and cultures for our terms.

The way that Richard Cheese covered U2 is the way that you covered tallulah71, which I find very interesting. There was at least one other cover vid that I remember, but I can't think of the who, what, when, or where.