I think you misunderstood or I mispoke... Disc at once is for having no gaps between the tracks.. I'm talking about purposely making gaps (Nero calls it pauses) but having sound during those pauses rather than silence.
I've heard it referred to as 'countdown' or 'minus' time.
One example I can think of is a Kool & The Gang CD I have.. 'Celebration/The Best Of' something or other. There's a track called 'Tonight' which starts with a count-in "One, two, three, four". Well, this is heard before the actual track starts, while the player sits on zero. It's quite a clever little trick and I wanna know if I can do it with Nero :)