Hello,
I dont know if I got you right.... if you have a long wave, wich you want to burn on to audio CD not as a long track but splitted in to any number of tracks, I have a sloution. Note that if your long wave doesn't have space between your final tracks, is ok, you can burn an entire mix on to an audio CD, but the CD-player "see" multiple tracks, depending on where you splitted the original wave.
So, open the original long wave in edit view mode, select from the beginning, 'till the end of the first track, and make a mark (F8). Now you will see a red mark at the beginning and a blue one at the end of selection. From the blue one, on the end of selection, select again 'till the end of where you want to be the end of the second track, and then again make a mark. Ans so on for the rest of the wave.
After that, you will have your original wave splitted by marks, one track is from a red mark to a blue mark. It is a good practice to fade in and fade out the beginning and the end of tracks, about... 20-30 samples, or less, as it is not audible for the ear, but it will not make any click/pop when plaing from one track to the next one, on a CD-player.
Onward, click your long track in the organizer window , an then click "Insert Into CD Project" button. Then go to the "CD Project View" tab and you see all the tracks ready to be burned. A good practice, to audio CDs, is to remove the 2 second pause between tracks, on the track properties window, select to do that for all the tracks, but the first one.
I hope it is what you are looking for, and it helped.