Music radio online (live streaming channels and individual track plays) generated 4.85 billion total listening hours in 2007, up 26.1% over 2006, according to a new research report by AccuStream iMedia Research. Total listening hours averaged 404.2 million hours per month (excluding downloaded music), compared to a 320.5 million hour average in 2006, including leading music subscription services such as Napster, Yahoo Music and Rhapsody. (PR)