You didn’t say what template you are using for rendering. It sounds like you might be using one that is not 16:9. There is no default template for DVD Widescreen that has audio so you’ll have to make your own or tweak an existing template. I would start with the DVD Architect NTSC Widescreen video stream template and enable the audio options that you want.
Another thing to consider is your target player. If the player you want to view it on doesn’t understand Pixel Aspect Ratios (i.e., it assumes that all video has a PAR of 1.0) then using a rendering template with a PAR of anything but 1.0 will not play back correctly. For this to work you can’t simply change the PAR, you have to change the video dimensions to conform to a PAR of 1.0.
For example, NTSC DV Widescreen has a PAR of 1.2121 with dimensions of 720×480. In order to make the PAR 1.0000 you need to multiple 720 x 1.2121 which is 872.712 or 873 rounded. So rendering 873×480 with a PAR of 1.000 will give you the 16:9 you are looking for. Note: this does not have to be done if your target output device is a DVD/TV. It’s only some PC/web players that ignore PAR and display incorrectly.
~jr
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