Andrew, I started from scratch and uninstalled the Community Codec Pack which also uninstalled MPC-CH. I downloaded the newest version of MPC-CH and installed it. Right out of the gate, there were problems. First off, my mkv's all looked crappy for some reason. 2nd, the mkv's would play on my pc, but when I would try to play them on my tv, I was just getting a black screen. I have no idea why I am having those problems, other than maybe I still need ffdshow video? I ended up restoring my pc to an earlier date to get back to where I was before these problems. I did notice this, when I play an mkv now, if I hover the mouse over the ffdshow audio icon, it does say the audio is s/pdif. Does that mean the audio is untouched going out of my pc,I hope?