So I used TsMuxer and ImgBurn for this process...I created both the BDMV and Certificate folders from the original .mkv file i had with TsMuxer...changed the profile to 4.1 and everything went without probelm...then i added the folders to the root of a DVDR in ImgBurn and burned it at UDF 2.5...again everything went fine...I then tried to play the disk in my PS3 and video was superb, but there is no sound...using AC3 @ about 450kbs...sound and video both play fine on my comp...anyone had this problem before? Any help offered would be appreciated