I have an RX 480. When I upgraded to Windows 10 from 8, I guess I had the N version that didn't come with the media feature pack. I have since installed it on my system.
I did a clean install on the drivers for the ReLive set, but I can't use ReLive. It comes up saying that it requires Windows Media Feature Pack. Which I have installed.
Here's an image for reference: http://i.imgur.com/Dd3rTm6.png