The Brooklyn Academy of Music will be presenting "Listening Post," a net art installation/performance, as part of a series of new media art. The piece, by sound artist Ben Rubin and statistician Mark Hansen, dares to ask what the collective voice of the Internet sounds like. Together, they'll try to transform collective online activity and communication into a multi-layered sound installation by monitoring thousands of online exchanges in real time to pick up rhythms, harmonies, melodies. The installation's on view from Dec 6-16. (Check BAM for performance times.)