MP3tunes, a new digital music store started by Michael Robertson, founder and former CEO of MP3.com, opened for business on the Internet today at www.mp3tunes.com. Songs are available for download from the MP3tunes site for $0.88 per song or $8.88 per album. All music sold at MP3tunes will work on any computer and with any portable player including popular models like the Apple iPod, Dell DJ and Creative Nomad.