Another thought I've had is that some parts of the film can be recreated without soundtrack. Unfortunately, your options are limited, as only a few lines are provided, but here you will find the official Star Wars soundboard, which has dialogue without music or effects.
http://www.starwars.com/games-apps/star-wars-soundboard
I wish there were more lines present, and I'm not even sure how to download the files, but if you know how, it can open up a few possibilities for you.