From Pac-Man to Pop Music, by Karen Collins, is free for UK Kindle customers (
UK link). This one is from UK publisher Ashgate, so I don't expect it to be free in the US, although it may be so later tonight or tomorrow.
Book Description
Digital interactive audio is the future of audio in media - most notably video games, but also web pages, theme parks, museums, art installations and theatrical events. Despite its importance to contemporary multimedia, this is the first book that provides a framework for understanding the history, issues and theories surrounding interactive audio. Karen Collins presents the work of academics, composers and sound programmers to introduce the topic from a variety of angles in order to provide a supplementary text for music and multimedia courses. The contributors cover practical and theoretical approaches, including historical perspectives, emerging theories, socio-cultural approaches to fandom, reception theory and case study analyses. The book offers a fresh perspective on media music, one that will complement film studies, but which will show the necessity of a unique approach when considering games music.