WorkAround
Warning: I am a total noob with Linux - This is what I did... try it at
your own risk.
Find file /etc/gnome/defaults.list.
open it for editing as root. (terminal -> sudo gedit)
Find these lines:
x-content/audio-cdda=rhythmbox.desktop
x-content/audio-dvd=rhythmbox.desktop
x-
I can confirm this behaviour. I had Grip configured as preferred application
for CD's in 7.10.
After upgrade to 8.04 (via update manager) the preferred application defaulted
to Rhythmbox.
I also set the dropdown to custom and entered "grip" as the command (as it was
previously)
Insertion of a CD