Ok, if your source is a disc image(.iso, etc...) then just select
"Write Image file to disc" in ImgBurn. Then browse to your image file on your hard drive. Select it and start the burn process. Its almost too simple. FYI, you can also burn SACD image files to DVD-R as well, just do the same and click "yes" when the program asks to convert to the DVD file system...
For manual file burning browse to the directory on your HD where the .VOB or .AOB files are and put them in the appropriate folders.
On the DVD-R blank disc:
DVD-Audio uses .AOB files along with other index files which must go into a folder always named
AUDIO_TS.
For older DTS or Dolby Digital files, all files must go to the
VIDEO_TS folder (even though you may have may no video.)
You don't need to have both folders, only the one that you are using.
The great utility/simplicity of ImageBurn is realised if you try and stay with image files so you don't have to mess with all this stuff,
you just burn the image to disc ("Write Image file to disc").