Thanks to Nick and Jambunathan I have got a minimal setup to be able to type in English (roman script) and easily transliterate to Sanskrit (Devanagari).
Now I am exploring how I could 'zip' the two together. My requirements are like this:
I will be teaching singing to a mixed group using a projector. Those who can read sanskrit would be put off by the roman (English) and those who cant of course need the roman. The attached screenshot shows two emacs buffers side-by-side with the two versions.
I am now exploring the possibilities of how to make a 'presentation' putting the two together. I am not too comfortable using emacs for the final show because emacs occasionally crashes -- due to non-standard fonts, input methods or what I dont know -- and I dont want this to happen in front of 50 people!
Screenshot.png