The sound vanishes and does not show video

[tww18]

The sound vanishes and does not show video!!! help meeeeee!!! :(

[simsample]

Are you referring to the game sound and video? If so you need to check here:
http://www.modthesims2.com/wiki.php?title=Game_Help:Game_Problem
And post here if you still cannot solve it:
http://www.modthesims2.com/fd.php?f=31
Otherwise, please let us know which program it is you are having issues with.