I'm trying to render the audio tracks from a project. When I go to "Render as a new track", AC-3 is not there. I have The Vegas®+DVD Production Suite so I should have it.
Vegas 5 cannot read AC3 but you can "render as" a new audio file and see if the AC3 encoder shows up. I bought it back when I was using 4.0d and Vegas 5 fond it and uses it just fo fine.