Napster's business is downloading music the legitimate way. Formerly Roxio, the firm operates an online music service that allows users to download audio files to PCs and portable music players. Some 700,000 subscribers to Napster, Napster to Go (compatible with MP3 players), and Napster Mobile (compatible with wireless devices) service plans can access the company's music library of some 7 million songs licensed from major record companies and independent labels. Napster also offers audio files for individual download. The service is available in the US, Canada, the UK, Germany, and Japan. Napster is a subsidiary of retail giant Best Buy.