Ok so I have an .mkv file that I'd like to convert to mp4 so that I can watch it on my AppleTV. I have read a lot of forums and the trick is, apparently: 1. Buy Quicktime Pro - check 2. Install the Perian plugin - check 3. Open the .mkv in quicktime pro and save it as a .mov 4. Convert it to MP4 As far as I can tell, this process should work fine. However, when I open the MKV in quicktime, for some reason it chooses to play the wrong audio (its a blue ray rip and its only playing the audio with commentary). How do I switch the audio so that its ready for conversion? I have already tried going view->languages->and selecting all fo the options. It doesnt change.