Interesting about the voiceover on the crawl. Do you know if that was theatrical, or if it was added later for things like TV broadcasts that may have been using video with the English crawl? I always assumed that both versions of the Spanish Star Wars had translated text onscreen for the crawl in the theatres.
And yes, I'm interested in the Star Wars audio. If it blends well enough with the GOUT audio, it may be better than the Blu-rays as a way to patch over the wrong audio in the trash compactor scene, due to no SE elements.