Streaming of audio materials over the Internet, mobile devices, wireless internet networks or systems and other computer and electronic communication networks; electronic transmission of streamed and downloadable audio files via computer and other communications networks; broadcasting and transmission of streamed and downloadable digital audio content via computer and other communications networks; subscription audio broadcasting via the Internet, mobile devices, wireless internet networks or systems and other computer and electronic communication networks; webcasting services; providing on-line bulletin boards and community forums for transmission of messages among users in the field of music