No Sound After Burning

Sorry if im in the wrong section
Can you help, i burned a film onto a disc and there was no sound. Before i burn the film i converted it into video ts Vts etc so i could put it through dvd shrink..
Also there seem to be 2 vob files in there, could that be the problem wuith the sound, i've checked that my volume was not on mute as i was getting sounds from everything else.
If you need it i can give you a screen shoot of what i got n my folder.
Thanks.

Sorry whilst I'm on this subject Ive got another DVD that is in iso format. Would i be able to burn this in its format or would i have to convert it.
i have got power ISO that has a burning tool in it should i use that.
Thanks.