I assume it's some sort of CD burning application.. now how do you presume it access your CD-ROM drive?
This is a permissions problem, add your user to the 'operator' group, change the permissions on the character device nodes for your drive.. i.e: 'sudo chmod 660 /dev/rcd?{c,a}'.
But don't blindly enter commands.. as you've shown you're willing to do in the past.