I have an mx-900 and programmed it to my onkyo tx-ds575x and whenever I go to push listen and audio it goes to the correct device however it changes the audio format from pro-logic to stereo and vice versa. I just want it to go to where it was and stay the same. I don't know why it is changing it. Sometimes I have to go to the cable box to change the channel or something and then go back to the receiver and whenever I do it changes the audio format. Please help me. Thanks, Harry