I`m trying to render my project audio to AC-3 (for DVD A 5.0), and both Dolby Digital AC-3 Studio and Digital AC-3 Pro renders produce a file with NO AUDIO STREAM.
Can anyone help me?
Thanks

An AC3 file is ONLY audio. You can't "turn off" the audio in an AC3 file.

When you add the MPEG2 file to DVD Architect, make sure you also add the AC3 file. By default, the MPEG2 file will NOT have audio. If the MPEG2 file and AC3 file are named exactly the same in the same folder, it will be picked up automatically.

Thank you Edward
I know an AC3 file is ONLY audio. I said I`m getting no stream (audio) when trying to render my project audio to AC-3, I mean, when I click properties in the file, it shows no audio stream. When I render to WAVE, I get the render with the apropriated audio file.
Vegas 9.0c

If you're trying to add it to Vegas, Vegas doesn't read AC3 files. If you add it to DVD Architect, it should read it fine.

Yes, I was trying to make Vegas read / play the file. That would be normal to me.
With DVD is working as you said.
Thank you again.