First I would say that roVideoScreen doesn't have native support for SMIL and you'd have to fetch and parse it manually with roXMLElement to get the m3u8 URL to pass to roVideoScreen
But your URL doesn't actually seem to point to a SMIL file. When I try it, I get a 302 redirect to an m3u8, not a SMIL.
I also noticed that there are some cookies that come back with the request. I've seen cases before with Akamai where I've had to make a request for the m3u8 using roURLTransfer, extract the cookies from that response, then add those cookies to my roVideoScreen using AddHeader() before the video will play.