Also the first track on the zip is incomplete. There is a longer version with extra sections and "true ending" in this video:
https://www.youtube.com/watch?v=-qvJeLU_ahE
This version repeats the vocal section so the original length must be around 10~12 minutes.
It's not "incomplete", it's just the version on the aerobicise laserdisc volume I took it from. There were several volumes of laserdiscs and VHS's released from 1981 - 1984 that contained different edits of all tunes, plus more new additional tunes were produced as the years went on. I have the first 2 from 1981, which is what these came from.
And yes, there are 2 versions of the LP. The major difference on those is that some pressings have an unused lead vocal version of "Never Gonna Give You Up", while most pressings have just an edit of the chorus only version used in the videos. Also, the few I have here that are on the LP are chopped down to 3 mins on vinyl while on the videos they're full length.