Audio is muted once I build but its not suppose to be.

Here is my issue I simulate the dvd and everything checks out . I build the DVD and check it in DVD Player. The problem i am running into is the audio seems like it has been muted. I have the computer volume level at half way and it worked fine in the simulation but once built i have to turn my volume up all the way to hear the same volume level it played at half way in the simulation.

I have thrown out my preferences and nothing has changed. I burn dvds on a regualar basis and never run into this issue.

Can anyone help?