This morning when I got up I logged in and started up iTunes, which came 
up as if it had been freshly installed: no music library, and the window 
was in a size and location I've never had it.
The actual music _files_ appear to be still there, it just seems that 
iTunes has lost its knowledge of them.  Is there a way to have iTunes 
scan and rebuild this information without having to force it to 
re-import all of the files?  If not, how should I proceed?
-- 
Found Poetry (_Science News_, 14-Jun-2003): oldest _homo sapiens_ find
+-----------------------------------------+ ocean eddies' far-flung effects;
|  Kevin Michael Vail <ke...@vaildc.net>  | superior threads spun
+-----------------------------------------+ the pox from prairie dogs.
> Last night, I was removing a DVD when I suddenly found myself back at 
> the login screen.  I thought it was odd, but it was late, so I just left 
> it there and went to bed.
> 
> This morning when I got up I logged in and started up iTunes, which came 
> up as if it had been freshly installed: no music library, and the window 
> was in a size and location I've never had it.
> 
> The actual music _files_ appear to be still there, it just seems that 
> iTunes has lost its knowledge of them.  Is there a way to have iTunes 
> scan and rebuild this information without having to force it to 
> re-import all of the files?  If not, how should I proceed?
Sure.  First, look in the trash to see if there's an iTunes Music 
Library file there, or go to Finder and  File>Find  (or command-F) enter 
iTunes Music Library (using "name is") and see if there's another 
one---the original one---moved somewhere else on your drive. If it's 
around, you're in luck!  Simply remove the "new" version (temporarily to 
the desktop and later to the trash) and replace it with the "old" 
version. Launch iTunes and all should be back to normal.
OR, from the iTunes Help menu comes this info:
"If you throw away the iTunes Music Library file, your songs will no 
longer show in your library even though the song files are still in the 
iTunes Music folder.
To make your songs appear in the library again:
    * Drag your iTunes Music folder (by default, located inside the 
iTunes folder in your Music folder) to your library in the Source list."
(They mean, to the open window where the songs used to appear)
"You will see the songs in your library again, but you won't see any of 
your original playlists (playlist information is stored in the iTunes 
Music Library file)."
Hope that helps.
Larry
-- 
Dr. Larry Bickford, O.D.
Family Practice Eye Health & Vision Care
The Eyecare Connection
http//www.eyecarecontacts.com
larrydoc at eye-care-contacts dot com (remove -)
> Last night, I was removing a DVD when I suddenly found myself back at
> the login screen.  I thought it was odd, but it was late, so I just left
> it there and went to bed.
> 
> This morning when I got up I logged in and started up iTunes, which came
> up as if it had been freshly installed: no music library, and the window
> was in a size and location I've never had it.
> 
> The actual music _files_ appear to be still there, it just seems that
> iTunes has lost its knowledge of them.  Is there a way to have iTunes
> scan and rebuild this information without having to force it to 
> re-import all of the files?  If not, how should I proceed?
There's a preference, under 'Advanced,' for directing iTunes to the old
library.
> OR, from the iTunes Help menu comes this info:
[]
Duh.  I never thought to look there, because it didn't occur to me that 
they would document a situation like this.  Thanks!  iTunes is 
rebuilding the source list as I type.
Playlists are no big deal, I only use a couple anyway and can easily 
rebuild those.
Again, thanks, that seems to have done it.