Why can't I get computer sound on my tv?

I have a sound card in my computer already and get sound on everything . But I cant get sound on the tv. I had a tv card installed. TV comes in great but no sound.

We have a Maganvox HD monitor that I was using in my room for a while but we recently started using it as a computer monitor but cant get the sound to work. My dad connected an audio cord.. (I dont really know what its called) from the back of the tv...

i've connected a computer to my tv fron the omoniter plug on my conputer ti the PC plug on my TV. it works but no sound can get play through the TV. i've turned up all the volumes, but i cant get the PC sound on the same channel as the PC video. any...

i just bought a samsung 330 series 32" hd lcd tv. i have it connected o my computer, i have been able to get the display part of it to work but i cant seen to get the audio to come out of the computer speakers that i have. all i did t\was connect...

I juss learned i could hook my computer to my flatscreen tv.. now that i have everything hooked up, i cant figure out how to get sound. Is there a wire so i can hook the computer to my tv to get sound or to my surround sound system?

i bought a new computer tower today but didnt buy any speakers cause i decided i was just going to hook it up to my tv..well i cant seem to get any sound through my tv speakers..is there anyway i can get the sound to go through my tv.do i need a certain...

I have my computer hooked up to my tv as my moniter and cant seem to get sound. Any ideas?

i have a sylvania tv as a computer monitor. but i cant get sound off of it please help!!

ok so a little while ago ( like 30 minutes) i started watching american dad on a site called TV links, and playing runescape while checking my Gmail, then all the sudden i started hearing this weird sound, almost like a tick and then my computer froze...