1) I find the following very confusing. Can someone explain this in more simpler terms for me?
NEW
Options... "Include Songs Database" In Auto Complete Lists - This check box enables using your imported Songs Database Title and Artist names.
When disabled, only the Import Local Database is used to create the Title and Artist lists for the Edit Songs, Import CD Tracks and Import HD Files screens. When disabled, this will present the MTU standard Artist and Title names, and build MUCH FASTER. You still have unique "Auto-Complete" options in the 3 screens to disable building and using the lists at all.
AUTO COMPLETE IS ADDED SO WE DON'T HAVE TO TYPE AS MUCH. 
MADJIM - I understand what "Auto complete" is! I am trying to understand what I have "underlined". What is the difference in the Artist & Title names when this feature is "enabled/disabled" as explained.
P.S. Some of the features I have been waiting on were promised a couple years ago, so Vista was not an issue.