I used an old 2011 mac mini I bought on ebay, hooked up to a tv, to play back the file.

I will not be spoiling the film for anyone who hasn't seen it yet. Instead I'm simply going to say I got chills. The direction, the sound design, the animation - all were excellent. Everything worked. I haven't had these kind of chills since I watched Priss and Largo duke it out in the original Bubblegum Crisis OVAs.