I have a decent size library of movies that i store on a old PM G4. It streams to my xbox 360 via ethernet using connect 360. I ripped all my movies with MTR, and encoded them with handbrake using the xbox 360 preset. 2kbps, 5.1 audio channel. But none of my movies are in surround sound. I use a optical audio cable out of my 360. I have dolby 5.1 enabled on my 360 as well. Do i need to encode them differently or is it just not possible?