On Nov 30, 2008, at 12:44 PM, Dan wrote:

> The iTunes library AND the folders in which my "master" copy be are
> on the same volume.  In fact, they're both in ~/Music.

The "iTunes library" is just a small cataloging file and has no music  
or music copies in it. It only keeps formatting information, and how  
to related lyrics and cover art to the actual tracks.

> iTunes is NOT moving the file.  It is making a COPY then disposing of
> the original.  IF that import included a format change, then your
> original is then GONE.
>
> That's why the default is to copy and leave the original - so as to
> avoid that destruction.

You're confusing two different functions of iTunes. Both may be  
construed as "Importing", but they're independent and different, one  
is "importing" music, the other is "adding" music.

"Importing" is the function of placing a CD into a CD unit and having  
it converted into an iTunes compatible format. This is controlled  
under the iTunes Preferences>General tab with the selection "When you  
insert a CD:" field and also the "Import Setting..." button and  
subsequent window. In iTunes, "Importing" means "ripping" a CD to your  
selected format. The default is AAC.

The ONLY other use of the term "Importing" by iTunes is in the "Create  
<file format import preference version> Version" from the iTune  
s>Advanced menu or from a Control-click (right click) of a highlighted  
track or selection of tracks. For example, if your import preference  
is 128kbps AAC the iTunes will say "Create AAC Version" but if you  
change the preference to 192kbps MP3 iTunes will now say "Create MP3  
Version". The name changes with your preference. In older versions of  
iTunes, previous to iTunes 8, this was called "Convert to <file  
preference> ..." rather than "Create <file preference> Version".

These are the ONLY two instances where the file format is changed.

---------------------------------------------------------------

"Adding" is the function of adding music files that are already in an  
iTunes compatible format into iTunes. Adding NEVER converts your  
format. It is controlled by the iTunes Preferences>Advanced tab using  
the check boxes "Keep iTunes Music folder organized" and "Copy files  
into iTunes Music folder when adding to library". If you don't check  
these boxes, your music stays where you place it, and doesn't copy  
anything.

Normally, the boxes are checked by default. IF iTunes is selected as  
your default music application for the file format selected, if you  
double-click a file to play it, it WILL copy the file into the iTunes  
music folders and use that copy to play from, the original file is  
never touched. If you had a full CD of files, and double-clicked only  
one track, only that one track would copy into iTunes. Now, if you  
moved the full CD of files to the trash, the copy of the single track  
would still be in iTunes. In the converse, if you did nothing to the  
full CD of files, but deleted the track from within iTunes, only the  
copy of the track would be deleted, and your originals are where you  
left them, BUT, they're NOT listed within iTunes until you play them.

The normal method of "adding" music files is to drag & drop them as a  
group into iTunes. This is NOT importing. The files are COPIED exactly  
as they are, they are NOT changed in format as with "importing". IF  
you drag & drop a full CD of files into iTunes they are all copied  
EXACTLY as they are, they are not changed in any way at all, they are  
COPIES, which means EXACT copies. If you now delete the original  
files, all the copies are still within iTunes, and they are organized,  
and perfect. In my mind there would be no reason to keep the originals  
once they were "added" (meaning copied) into iTunes.

Here is a common problem related to bloating and duplicates in an  
iTunes library. Say you have a CD that has previously been ripped to  
some iTunes compatible format, say .mp3, but it was a "rare" CD,  
perhaps a local band demo where no track information was available  
during the rip process. These tracks will have generic names, i.e.  
"track 1", "track 2" etc. If you double-click such a track, or add  
them to iTunes by drag & drop, they will COPY into iTunes as Unknown  
Artist, Unknown Album, track 1. If you then correct these within  
iTunes to say the real name of the artist and album, the COPIES within  
iTunes will now change names to have the names you've corrected.  
However, the original files outside iTunes remain as track 1, 2, etc.  
Now, your COPIES within iTunes are more correct than the originals,  
which still have the wrong names, artists, albums associated with the  
files. Worse, these files now differ, and if you inadvertently double- 
click an original "track 1" file it will be re-copied to iTunes  
because you've corrected the other copy, and iTunes won't recognize  
that it already has this track, so you'll get a 3rd copy. This becomes  
a mess quickly if you keep the originals, so the BEST idea is to ONLY  
keep ONE copy of each track, and the best place to keep that copy in  
my opinion is "organized COPIES" within the iTunes music folder with  
the originals being TRASHED ASAP. Again, just to reiterate, the COPIES  
in iTunes are EXACT COPIES, like clones, they're NOT IMPORTED, they  
are ADDED (meaning cloned) and their format isn't changed. As long as  
you have a normal "backup" of your HD, there is no reason to keep  
extra duplicate copies outside your iTunes music folder.



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