Computer software for use in downloading, transmitting, receiving, extracting, decoding and playing audio data; computer software for use in downloading and streaming audio materials via the Internet, mobile devices, wireless internet networks or systems and other computer and electronic communication networks; computer software for use in downloading, transmitting, receiving, extracting, decoding and playing audio files; software that enables users to play and program music and entertainment related audio; software featuring musical sound recordings and entertainment-related audio; Music download services provided over the Internet, mobile devices, wireless internet networks or systems and other computer and electronic communication networks, namely, providing a website allowing users to download music; Application Service Provider (ASP) featuring software for use in connection with online music subscription service, namely, to browse, retrieve and listen to digital music files; providing on-line facilities, via the Internet, mobile devices, wireless internet networks or systems and other computer and electronic communication networks, to enable users to arrange audio playlists and retrieve digital music; providing temporary use of on-line non-downloadable software to enable users to program audio content, including music; providing a website enabling customers to program audio content, including music, on a website and mobile applications