Buy.com on Tuesday launched a new digital music download service -- the site, BuyMusic.com, offers a catalog of more than 300,000 songs. The site only loads in Internet Explorer and all the files are Windows Media 9 formatted with DRM. No word yet on whether the public announcement of a supposed gaping hole in Windows Media DRM caused any concern before the launch. Compatible players include the Nomad IIc 9 and Creative's Jukebox Zen."