In my limited use of stacks, I have discovered that neither EOS or Gizmo can do anything with them. They seem to only show the top member of the stack, which isn't useful at all.
I've begun converting my stacked video files into single files instead. This makes more sense to me for ones that should be viewed as a whole. Ones that don't need to be viewed together (as one movie), don't need to be stacked. If I need another level of organization, I'll figure out a way to do it with categories instead.
Stacks is another one of those MC features that seems really compelling, but on further examination just isn't useful for *me*. For image files, stacks make more sense perhaps. Unless you want to view them with JRemote.
Brian.