Yes, I read your earlier post and was puzzled by the 'assumed answered '
i was looking into the multiplexing with respect to 'creating the video and audio as one file ' as the reply post suggested. I did not see the option as to what was suggested in the multiplexer field within CS6.
My only only thoughts would be to export out a few different settings and see which ones created the 'one file' as opposed to audio and video in separate files.
I thought your previous replied stated ' the latter' - which referred to MPEG-2 DVD and not your MPEG2 as you state above
I tried exporting it as regular MPEG-2 and left the preset as default which was DG Fast Channel. There was still an XMP file added under it. Going to try more options.
I would be experimenting with the settings within the multiplexer options. I am not at my machine so not sure where you are with your setting choices.