When to use Disc-at-once/Track-at-once?

Can someone tell me the best uses for both Disc-at-once and Track-at-once when burning CD’s and DVD’s ? I mostly burn MP3 and Audio CD’s. THANKS FOR YOUR HELP.

I’m not a pro at this but DAO will put your selections for that disc as uninterupted between tracks. For example if you have a live recording DAO will include the applause between songs and whatever. TAO will have a slight noticeable jump to each mp3 file. I use DAO exclusively for my mp3 disc. You my want to experiment as to wheather you make them audio or data disc. Hope this helps a little.