sound not playing on certain programs

[tpspoons]

hi.
Basicly this has been going on for a while now... i could live with it when the only programs the sound wasnt playing were ones i never used, but now i get no sound on any browser, quicktime, skype (people can hear me but i cant hear them), and probably others if i cared to look. Btw my sound card aint busted, it plays fine on itunes and wmp.

any1 got any ideas?

thanks.

p.s. I tryed updating my driver... didnt work, il try again now.