hmmm…there can be many reasons.
Given that you have tried several files, it would seem to be a setting…
I think the question from John Bolton about hearing sound when playing on the timeline is the critical one.
Also, what are you using to play the output file? Make sure its internal volume control is not turned off. 😉
Just one thing. You would have to be dead unlucky, but several of the templates have sound off by default. When you ask to render, choose your template and Customise Template. Click on the Audio tab and make sure Include Audio is ticked.
A (shudder) thing to try IF ALL ELSE FAILS is to uninstall and reinstall Vegas. This can happen if your codecs get fritzed somehow. But… last resort.
Nick
Head: Hertz Music