it could have been the (PRESTIGE) Mira - First Time Experience Beautiful Girl Nakadashi 62 (CTD062).avi one
... errrr... I think I uploaded that file. Have you tried:
- plugging in headphones? It might be a problem with your speakers.
- seeing whether line output works OK? Again, it might be a problem with your speakers.
- using a different application? Changing applications (winamp, wmp, mpc, vlc, etc.) might do the trick.
- diverting sound to disk? In winamp, there is an output plugin called Disk Writer that diverts audio output to a file. If the sound in that file is distorted (check with an external MP3 player), its probably a SW problem, but not related to DirectSound.
- when your computer boots itself up, does it give a "beep"? Does the beep sound OK?
- last but not least, have you checked to make sure your speaker cables are plugged in snugly?