* "That'd be cool if it worked, but at least in my case, it doesn't" --It works if you put line numbers at the beginning of each line--then it highlights the diff per line in both buffers/in both files--you do "Mx ediff-buffers" on--I know it works if you do--I tested it before I posted. I usually use "nl" (UNIX) to do this (quoting myself):
...
nl sanskrit-song.txt > sanskrit-song_line-numbers-at-front.txt
...

* Also, Thanks Nick for the pointing to notes on how to translate the english/roman script etc. and the updating of views related to this thread:

"updated a thread on gnu.emacs.help with those
suggestions: http://thread.gmane.org/gmane.emacs.help/83724

On Wed, Feb 15, 2012 at 2:49 PM, Nick Dokos <nicholas.dokos@hp.com> wrote:
brian powell <briangpowellms@gmail.com> wrote:


> Make 2 files with line numbers at the begin of each line: 
> nl sanskrit-song.txt > sanskrit-song_line-numbers-at-front.txt
> nl english-song.txt > english-song_line-numbers-at-front.txt
> emacs -q -l sanskit-blah-mule-multilingual-emacs-programs-needed-to-show-sanskrit.el
>  sanskrit-song_line-numbers-at-front.txt english-song_line-numbers-at-front.txt
> Mx ediff-buffers
> Emacs will pop-up an ediff window--put your mouse cursor on it and tap "?"--it will show you the
> ediff keys--"n" for "next different line" will be most helpful
> (ediff will ask for the 1st and 2nd buffer you want to compare--type
> in sanskrit-song_line-numbers-at-front.txt and english-song_line-numbers-at-front.txt
>
> --then tapping "n" (with your cursor on the popped up ediff window) goes line-by-songline in both
> buffers--highlighting the text for a sanskrit sing-along!
>

"That'd be cool if it worked, but at least in my case, it doesn't:
diff decides there is one big diff that covers the whole file,
and ediff does not find a "better" refinement: no "n"
to follow the bouncing ball...

Nick