Just to updated you, ALVR ran into issues trying to add support and now they're not sure if, or when, they're going to add support for the Samsung XR. Since I'm on Linux I'm basically at the mercy of either them figuring it out or HereSphere adding in-headset app support. There's quite a lot of discussion on Reddit of there currently being no video player app on the Samsung XR, so I think you'd have quite a few immediate sales if you were first to market with one for the headset.