Mine

kakaroto% dpkg -L libao2            
/.
/etc
/etc/libao.conf
/usr
/usr/lib
/usr/lib/ao
/usr/lib/ao/plugins-2
/usr/lib/ao/plugins-2/libalsa09.so
/usr/lib/ao/plugins-2/libarts.so
/usr/lib/ao/plugins-2/libesd.so
/usr/lib/ao/plugins-2/libnas.so
/usr/lib/ao/plugins-2/liboss.so
/usr/lib/ao/plugins-2/libpulse.so
/usr/lib/libao.so.2.1.3
/usr/share
/usr/share/doc
/usr/share/doc/libao2
/usr/share/doc/libao2/changelog.gz
/usr/share/doc/libao2/copyright
/usr/share/doc/libao2/changelog.Debian.gz
/usr/share/man
/usr/share/man/man5
/usr/share/man/man5/libao.conf.5.gz
/usr/lib/libao.so.2
kakaroto% ls -lsh /usr/lib/libao.so.2.1.3 
16K -rw-r--r-- 1 root root 15K 2007-05-31 11:27 /usr/lib/libao.so.2.1.3
kakaroto% ls -lsh /usr/lib/ao/plugins-2  
total 52K
 12K -rw-r--r-- 1 root root  10K 2007-05-31 11:27 libalsa09.so
8.0K -rw-r--r-- 1 root root 4.3K 2007-05-31 11:27 libarts.so
8.0K -rw-r--r-- 1 root root 4.5K 2007-05-31 11:27 libesd.so
8.0K -rw-r--r-- 1 root root 5.6K 2007-05-31 11:27 libnas.so
8.0K -rw-r--r-- 1 root root 6.0K 2007-05-31 11:27 liboss.so
8.0K -rw-r--r-- 1 root root 6.4K 2007-05-31 11:27 libpulse.so