I recommend that you use MediaInfo to analyze.
What are your export settings? A screen shot of each of the Multiplexing tab, Video tab and Audio tab would help.
I just exported an .m2t transport stream with mpeg I layer 2 audio successfully. The file doesn't play with audio in WMP, but does in VLC. MediaInfo shows the following information on the exported file:
I am still waiting to here back from the access channel coordinator to see if the test file encoded this way would be recognized and play correctly. The files can only be tested when the server is off-line so it takes awhile for a response. Thanks for your help. I'll post when I get word of that file status.