thanks jhonny, the documentation is a good point to start exploring how it works.
Since the voice tracks, after recorded and during import, you can set a start and stop date, do those recordings still stay saved to disk after that time, or could they be programmed to be erased from disk after their expired date has passed?
the reason to me, is I perceive voice tracks are intended to "impersonate" a live dj, but if you keep using the voice tracks over again, the listeners will get wise and realize you're not really alive dj, lol.
if you fail to manually erase them after they have expired, then your storage space would build up with excess tracks that you've already used in your magic show, lol.
EDIT:
I just found this http://viyoutube.com/video/5VO0B_2nxEw/radiodj%20-%20file%20moving%20after%20playing
which shows how to move a track after it has been played, so I dream I can apply this to voicetracks, so they don't get re-used and it makes it easier to delete them!
power of googles!