The $1 billion lawsuit that Viacom filed against YouTube last year has the potential to redefine electronic copyright law, if the slowly-moving case ever yields a ruling, rather than a settlement.As it crawls its way through the court, we caught up with YouTube's top lawyer, Zahavah Levine, when she spoke to a group of Web-savvy musicians and technologists at the San Fran MusicTech summit.In this segment, Levine laid out all the challenges that YouTube faces in trying to follow the Digital Millennium Copyright Act, or DMCA, which YouTube is using as its defense against Viacom.According to Levine, Google has licensing agreements with the four major music labels and with organizations that represent independent musicians. While relatively easy to obtain, those ... [ Read more ]