well. if u click on the replay file u download it. u cant watch them online.
once you downloaded them they are normally in your download folder.
then u go into your download folder. and search the replay.
then ull go to the toribash folder (C>Games>ToribashX.XX>Replays) drag the replay there. then open toribash and go setup>replays. search the name of the replay. click it and there ya go.