Comment 3 for bug 420521

Don't mix behavior between audio and video files.

But how about this:

* If the user douple clicks a file then start totem with closed sidebar.
* If the user drags a file over totem, then open the sidebar so he can choose to drop the file
    o in the main window (sidebar closes again after this) or
    o in the sidebar to enqueue the file (sidebar stays now open).

Similar to dragging a file over a mailclient, when a sidbar/pane opens to attach the file to mail.

Could be quite intuitive and matches the usecases of Rich Jones and Antoine Leclair.