Roxio's help files says this:

Finalize Session. Don’t Finalize Disc: Select this option to finalize the session. The disc itself is not finalized so additional sessions can be added later.
If you are making a music CD, this option finalizes the session so that the disc can be played on home stereo equipment. If additional sessions are added later, only the first session on the CD can be played on most stereo equipment.

Now my question is not answered here but. If I finalize a session with 3 tracks, can I put other tracks on after that and finalize them as well and still listen to them in succession just like it was recorded all at once?

This not-so-helpful statement says that only the first finalized session can be heard on your CD player. It doesn't say that you can add and then finalize and hear all tracks.

If you can hear the whole CDRom then will there be a pause between sessions and it will still keep playing all of the Music CDRom that you made?