The Evolution of Video Game Music - An NPR story with links to web resources at the bottom.
The Impact of Music in Video Games - An article from the Gaming Gazette.
The Importance of Music in Video Games - A 5-minute YouTube video on the importance of music in video games.
What's the Future of Music in Video Games - A slightly longer (about 12.5 minutes) YouTube video from the BBC about developments in video game music.
The best RTC database for finding articles in video game music is ProQuest. Try some of these searches: (You'll have to log in using your RTC student email address and password.)
Try EBSCOhost Community College eBook Collection for ebooks on video game music.