Sorry lol....Vista is the new operating system from Microsoft...Just like XP...
AV is your Antivirus program....
You said...
Before I posted my message, I was deleting ONE song from my library. Next thing I knew everything was deleted from it. Arghhh!
That means you have deleted all those files from your computer, so none of your songs will work now, their gone....
If you can get the drift of this thread you may be able to get them back...
DELETING FILES FROM LIMEWIRE LIBRARY-DON"T! - File recovery advice!