"Can I add episodes from other sites to my Gizmoplex collection?"

Taken from Backer Update #15:
https://www.kickstarter.com/projects/mst3k/makemoremst3k/posts/3178709

Unfortunately, we don't have any ability to include or import episodes of MST3K that you got on other platforms (iTunes, Amazon, RiffTrax, etc). We wish we could... but we can't afford it!