You do not need a third party program to burn the Video TS and Audio TS files to a DVD.
OSX has the function built in, but it is not very obvious.
Assuming that you have a group of VOB files (and all the other required files) in a Video TS folder. Open up the finder to show the Video TS folder.
Then insert a blank DVD in the computer drive and wait for the message box to appear. Select the open finder window option and you will have a new finder window for the DVD drive. Drag the Video TS and Audio TS (If there is one) folders from the first finder window into the new DVD window. This copies all the files.
The last step is to click on the "Burn" button in the corner of the DVD window.
The burn starts and appears to be a two pass process with verify. Assumming that you have good files and a good DVD, you should have a playable DVD.