Hi i know this thread was posted ages ago but i was having the same trouble just now and came accross this thread. So i thought i would post the solution i found in case anybody else got this problem. First find the folder that your looking for by going to the C:/Users/PC_Name directory then click the mouse once on either the MY/Pictures/Videos/Music/Documents directory and a new option will appear in the menu bar saying include to library click on this and it should give you the option for all the above directories.