Alright, I did a search on this but couldn't find exactly the answer I was looking for.

I demuxed an mpeg2 stream into an m2v and mp2 using ffmpegx. I am now trying to mux them back together as a DVD stream but the terminal window keeps displaying that the mp2 file is unrecognisable as an audio file. I also tried converting the audio to aiff but still no dice. Any suggestions or is this a problem with the program? I am using the latest version of ffmpegx with the mux feature under the "tools" tab.