Microsoft and MTV launch online music service

In the meantime, plenty of competitors have opened shop on the Internet, to mixed results. To date, digital music sales seem to work best for companies that don't need to make money selling digital music. Apple Computer has used its store primarily as a way to push its iPods; Yahoo! has used its music-subscription service to help serve ads; and News Corp.'s MySpace simply uses lets users listen to music free of charge. Napster, the only pure-play music retailer, has yet to make a penny.