Preparing to replace oxygen-icon-theme 4:4.11.2-0ubuntu1 (using .../oxygen-icon-theme_4%3a4.11.2-0ubuntu1_all.deb) ...
Unpacking replacement oxygen-icon-theme ...
Selecting previously unselected package preload.
Unpacking preload (from .../preload_0.6.4-2_amd64.deb) ...
Processing triggers for hicolor-icon-theme ...
Processing triggers for man-db ...
Processing triggers for ureadahead ...
ureadahead will be reprofiled on next reboot
dpkg: error processing libao-common (--configure):
 package libao-common is already installed and configured
dpkg: error processing libao4:amd64 (--configure):
 package libao4:amd64 is already installed and configured
dpkg: error processing libattica0.4:amd64 (--configure):
 package libattica0.4:amd64 is already installed and configured