Kudos to Silicon Alley Insider for answering the question about why Sony BMG was not among the major record labelsagainst Project Playlist.
Hilary Lewis at SAI reported that Sony BMG is in negotiations with the music start-up.
On Monday, the Recording Industry Association of America (RIAA) claimed in documents filed in New York that Project Playlist makes it easier for users to find unauthorized reproductions. The company provides an embeddable music player used at MySpace and Facebook and claims not to infringe on intellectual property rights because it doesn't host any music files on its site.
A Sony BMG spokesman declined to comment.
What this indicates is that the top record labels are not always in agreement on how to handle copyright cases.