help! I need somebody! help!

I'm back from the beach and all suntanned in weird patterns. AWESOME TIMES. Even though it was BOILING hot down here, like melting butter in the fridge kind of hot. But not for me! We have an awesome, not to hot day - and I spent most of it in the water. And even when the power went out to half the state, it was on again for us by the time it was getting dark. Saturday I'm stuck down here though. Packing.

Packing. Packing. and oh! freaking out about packing! Fun times! 

Okay my most dearest of people.  I need some video file help. or something to that effect. I downloaded a .avi file of Torchwood AND IT HAS NO SOUND!! AND IT IS 1.08!! Like no sound at ALL, silent - all my other files play fine, with sound and picture and the pretty, but just not this one. Is it the file itself? Do I have to download a whole new file? Which I'm already doing because I need to see this epsiode!   

Any advice will be rewarded. With like a virgin sacrifice or something.