Amazon Mobile I'm a fan of the Amazon channel on Roku, and I love taking advantage of the free movies for Prime members. But one quirk of this channel is that some paid movies ONLY show up to buy, not to rent. Go on the Amazon app, find the movie, and you can click to rent from the app. Then it shows up on your Amazon channel. Wish they'd fix that on Roku, but till then, the app is a must.