XBMC4Xbox

For the time being, whist in the video library window, we are unable to use the Boolean condition "Container.Content(Sets) or Container.Content(MovieSets) whichever mainline may use)"; sure, we can use "SubString(Container.FolderPath,videodb://1/7/)" but it would better to use the former.

From looking at the code, to set the content type, we could add the following after line #405 - there's probably more involved but could not identify it:
else if (node == NODE_TYPE_SETS)
items.SetContent("sets");

This can be viewed in xbmc mainline in line #404: https://github.com/xbmc/xbmc/blob/master/xbmc/video/windows/GUIWindowVideoNav.cpp