Trouble with audio when converting ProRes to MPEG2 HD 422

I am not sure what the problem is but the files I make with compressor won't play back audio on our Play out server.
the PlayBox AirBox. The files I tried from Sorenson Squeeze 8.5 seemed to work fine. I am not sure what I am doing wrong.
here are my settings

It turns out that I can use the HD XDCam 50 setting to work with our playout server.
Although the bitrate is higher than necessary. The final bitrate on the MPEG2 encoder on the output before the transmitter is only about 12Mpbs. But hey this works!
I just wish Apple would support an MPEG2 HD 422 codec that would allow for bitrate adjustments etc...
I saw that PixelTools has a QT Codec plug in for QT but it is like $1,600!!!
But the cool thing is you can export directly from your timeline into HD MPEG2 and include your closed caption files at the same time.

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