i cant get my sound to play off the master disc

[mega millz]

hi guys i put a dvd together and iv done this al least 50 times befor but my last 3 disc for some reasone have chapters that have no audio but if i preview it i hear sound i went and and add background music and its wierd cause i hear that but not the audio from the origenal clip should i re edite it all togeather??? can anyone help me???

[FRance]

Hi

You might have accidentally muted the video clip that is why the audio you inserted is the only sound you can hear.
or
You have overwritten the original audio of that chapter with the audio you inserted,

I agree with you that you should try to re-edit it again.

Hope this could help.