View this article at: http://dev.macnn.com/articles/05/08/10/digital.music.growth Wednesday, Aug 10, 2005 11:40am Sony exec: digital music gr... Sony expects digital music to grow to as much as 20 percent of the market by 2008, according to Thomas Hesse, president of Sony BMG's Global Digital Business. Hesse delivered a keynote speech at the Music 2.0 conference in Foster City, CA. This is a "fundamental transformation," Hesse said. Not only are music fans buying songs and albums online, they are also embracing new music formats. Ringtones offer the biggest example, with artist Cassidy selling over one million jingles prior to his album reaching store shelves. Hesse said he also favors a transformation in the ways that labels do business, including a simplification of artist royalties based on total revenue rather than units sold.