what is the internal priority for brasero when select between cdrecord/cdrdao/cdrttool

[Jerry Tan <Jerry Tan Sun COM>]

Hi, guys,
from http://www.gnomefiles.org/app.php/Brasero
I got to know that brasero has a internal priority when select different
backend when execute jobs.

I just want to know what is the internal priorify

for example, Audio CD burner?

thanks.