Hmmm....I don't know if I can give you excatly what you need. I do not know what can be used to get a specific window for each drive. I am assuming that you want a separate tab for each drive, "I", "J", and "K"....correct?
I can use the following value string:
CODE
$directory(%_path%,3)|$directory(%_path%,2)|$directory(%_path%,1)|$num(%tracknumber%,2). %title%
This will pull out my three Music subdirectories (FLAC, MP3, and MP3 V4) on my "E" drive (I only have one drive with music), with the appropriate artist/album/title directories underneath.
I can add
CODE
$directory(%_path%,4)|
to the beginning to show the actual "MUSIC" folder, but if I add
CODE
$directory(%_path%,5)|
it will not give me the drive letter.
There is the directory structure option if you right click on one of the Album List tabs, then select view. You will see all of the options that are set in your preferences, plus a "by directory structure". This will lay everything out in one tab though.
Edit: Cleaned up post
Edit2:
I did a little more testing, and found that I could display the drive letter as a node in the Album List panel. Remember, this is based on the way my directory path is set up.
I could use the following to get nodes for the entire path, starting with the drive letter.
CODE
$directory(%_path%,6)|$directory(%_path%,4)|$directory(%_path%,3)|$directory(%_path%,2)|$directory(%_path%,1)|$num(%tracknumber%,2). %title%
This will give
CODE
All Music
-E
-FLAC
-Artist
-Album
-Title
-MP3
-Artist
-Album
-Title
-MP3 V4
-Artist
-Album
-Title
For some reason, the drive level in the path is two above the main directory, not one level above like one would think.
I hope this isn't confusing.