Free Webcast Watch the Dave Matthews Band perform "Where Are You Going" on the roof of Letterman's Ed Sullivan Theater. music_matthews_dave.jpg 1 CBS.com http://www.cbs.com video.gif http://cgi.cbs.com/video/video.pl?url=cbs/cbs/g2demand/entertainment/mini/lateshow/music/dmb.rm&proto=rtsp&rpurl=http://www.cbs.com/latenight/lateshow/ PLAY headline