Budding Rap War? Police investigate Jam Master Jay's murder. music_jammasterjay_rundmc.jpg 60x45 1 lock_icon.gif superpass.gif http://abcnews.go.com/sections/us/videofiles/Video/021101jammaster_video.ram 10363637338530 ABCNEWS Story lock_icon.gif video.gif rtsp://media.real.com/realguide/music/media_a/rundmc_crownroyal_epk_rv8hi.rm?rpcontexturl=http://smilparse.real.com/showcase/1pubs/tcenter/music.html 10363637338531 Run-DMC Tribute lock_icon.gif lock_icon.gif headline