Is it possible to add audio with no video to a dvd project?

Yes. Please provide more details of what you are trying to accomplish. Is your source a video and you want to hear the audio only of that video?

Okay, I have dvd tracks with vocals that I have already added to the "project". What I would like to do is now also have audio only tracks with no video, or just a black screen, or a still photo. So basically the end result is video tracks and audio only tracks intermingled within a project, as a dvd.

Hope that makes sense?

Put the vide on the main tarck of Videowave. Then add a still image as an overlay. Adjust the duration of the overlay image accordingly to correspond to the length of the audio that you want to hear but with no video showing.