thanks for reply with solution
I think I mess up some link I download from this thread. if not mistaken certain torrent volleyball files from this forum link no sound, even play VLC also no sound (link = http://torrents.ru/forum/viewtopic.php?t=2432471 file = Men's 2009 Grand Champions Cup_ Cuba vs Brazil.torrent )
no problem. and you're right that that file (cuba-brazil) doesn't have any audio, no matter what you play it with. i think it was a problem with the original cap. but it's the only one i've seen that has had that problem.