Ok folks, I just did The Motion Picture theatrical. It was well worth the effort, actually - it's a really interesting mix, albeit quite rough at times (Robert Wise was quite adamant that it be properly 'finished' when he did his later director's edition).

The Dolby TrueHD 7.1 on the Blu-ray is, in comparison, fairly faithful in content; however it includes a great deal of forced panning to (presumably) 'liven up' the soundfield. This 1991 laserdisc track sounds just as it would have on a 35mm print, rough edges and all... and yes, the music sounds great.

PM me for links.