Hi, currently I have home media server setup with plex server and I am streaming movies to my TV. I would like to extend my setup so I can watch movies in surround sound, however I have very vague understanding of what I need. I'm thinking of getting AV receiver and 5.1 speakers, however it is not clear to me how do I wire things up, since plex is streaming directly to TV plex application, will my TV be able to pass trhough 5.1 to AV receiver? Is that at all possible? What features should I look for in an AV receiver / new TV if required.