Check out this trailer for "Dr. Horrible's Sing-Along Blog, the upcoming web-only musical by Joss Whedon, starring NPH, Nathan Fillion, and Felicia Day. It's going to be awesome!
Teaser on Vimeo
Teaser on Vimeo
Music, audio, film, the arts, technology, pop culture...a veritable potpourri of topics!
Here are also three articles I found on the subject:
http://www.neowin.net/news/main/08/05/25/music-20-engineers-unveil-mt9-format
http://www.koreatimes.co.kr/www/news/nation/2008/05/133_24597.html
http://english.etnews.co.kr/news/detail.html?id=200805230009