I assume that you are using NERO 6 and not Nero Express.
If you are using Nero, you can do it all withing the program itself.
Disk writing. There are two methods of writing an audio CD. "Track at once" and "disk at once". Track at once (TAO) burns the track, then stops burning for two seconds the start again. Disk at Once (DAO) burns in one go without pausing but each track is still accessable as normal. DAO is ideal for concert CDs etc. However, I burn all my audio cds as DAO.
You will also notice, after dragging the music accross when compiling the CD, in the left hand window, you will see the TRACK, TITLE. PAUSE etc, if you double click on each track you can change the PAUSE to 0 and if you click the FILTER TAB (while in the same pop up window, you can normalise the tracks. Not 100% but it does help.