There are two checkboxes to look at:
Even with Export Audio checked, if Multiplexing is set to None, you will get two separate files, one Audio and one Video.
Good luck, and I hope that is the answer,
Still no audio have looked at both areas Have tried a lot of different ways. really bugging me. what do you think
Take a screen shot picture and use the camera icon to insert so everyone may SEE what you are doing