The original source files for the book "Programming and using Linux sound in depth". The source files are a mixture of HTML, CSS, Javascript and the Java/C/etc programs. The programs are pulled into the Web pages by a server-side script 'escape.pl' which just rewrites funny HTML characters such as '<'. This allows 'live' inclusion of source files into the book. That file lives in /usr/local/bin but is included in the toplevel directory.
These files directly generate the web pages on jan.newmarch.name/LinuxSound.
They are also used to generate the Markdown files on Gitbook for Programming and using Linux sound systems