Open Sources: Voices from the Open Source Revolution The full text of this O'Reilly book has been made freely available online. http://www.oreilly.com/catalog/opensources/book/toc.html

The Linux Cookbook All-encompassing book on using open source software, which itself is open source and available online. http://dsl.org/cookbook/

Free for All Full text of Peter Wayner's book, subtitled "How Linux and the Free Software Movement Undercut the High-Tech Titans". [PDF] http://www.wayner.org/books/ffa/

Verb Books Features several open source books. http://www.verbbooks.com

MP3 Book Helper Provides Mp3 and Ogg Vorbis tags editing and file renaming functions. (Delphi) [Windows] http://mp3bookhelper.sourceforge.net/