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New computer applications, such as the infamous "Napster" system enable the sharing of music over the Internet, with limited communication around this sharing activity This paper discusses the use and opportunities for these music sharing technologies using interviews with users of both conventional and new music sharing technologies. The data show that music sharing is a practice that is richly linked with other social activities New music is often discovered through friends, by listening to music together, or in the form of compilation tapes. In these environments, sharing music is a natural activity. With music sharing over the Internet, however, much of this social context is removed This suggests opportunities to turn music sharing into a more collaborative and community-related activity These opportunities are explored with the "Music Buddy", a system for browsing others' music collections without infringing the copyright of artists.

Psychophysiological measurement has the potential to play an important role in audience research. Currently, such research is still in its infancy and it usually involves collecting data in the laboratory, where during each experimental session one individual watches a video recording of a performance. We extend the experimental paradigm by simultaneously measuring Galvanic Skin Response (GSR) of a group of participants during a live performance. GSR data were synchronized with video footage of performers and audience. In conjunction with questionnaire data, this enabled us to identify a strongly correlated main group of participants, describe the nature of their theatre experience and map out a minute-by-minute unfolding of the performance in terms of psychophysiological engagement. The benefits of our approach are twofold. It provides a robust and accurate mechanism for assessing a performance. Moreover, our infrastructure can enable, in the future, real-time feedback from remote audiences for online performances.

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