42 Research, development and consulting services in the field of digital rights management for the protection of rights of artists, authors, producers, publishers and distributors in digital information; providing services to content publishers to enable the distribution and marketing of digital products, namely, consultation in the field of intellectual property protection and digital rights management, computer programming, computer software design; maintenance and updating of computer software; computer hardware design; provision of computer on-line services in relation to retail sales of audio and video recordings; provision of computer on-line information on music releases, on reviews, on concerts, on concert tours, on musical artists, on the music industry, on recording and playback equipment, on-line provision of music samples for listening, provision and/or sale of audio and video samples and/or recordings for downloading and playback, matching musical preferences and interests of website users to audio and video recordings and selections and to other websites