The idea is to use a 8-switch relay (or two) to connect to a Raspberry pi and control the switches according to the music.
To control the music, hack mpg123 to take a "frames" file which would contain which channel should be switched on or off.
Perl-apparmor is obsolete in the apparmor community. No one is maintaining it. However, opensuse has to keep it to interact with yast, which is the main consumer of perl-apparmor. Getting rid of perl-apparmor would mean:
+ Creating a new interface (JSON) to interact with outside world (IOW, yast)
iomap is a way to map file blocks to the device. Many filesystems such as xfs, ext4 or gfs2, use this common code to perform buffered and direct I/O. The advantage would be smaller codebase in individual filesystem code (ocfs2), lesser defects and better maintainability.