If someone even had a print in their collection with the magnetic six track 70mm baby boom, hoping that the magnetic elements had not warped or degraded or gone to vinegar due to time. How would you capture the audio?

I have heard of people buying prints or trailers of movies with a dts track and being unsucessful with getting the audio off of them. Apparenly you need very highly expensive theater equipment that can read the dts discs.

I have never seen a preservation of the 1997 dts mixes for star wars and probably never will.

They probably made very few dts 70mm prints.

The most common is the dolby. Similar to what ended up on the 97 special edition laserdiscs, and the newly made mix on the 2004 dvd.

Are there any Lucas dvd out there with dts? As far as i am aware there are none.

Spielberg is one of the people that championed dts, but since 1977 lucas has always been attached to dolby. Not sure if they have some deal or agreement or if he just prefers his films in that audio format.