Sound from Computer/Speakers is funky

[Chiri Kcrinh]

When I watch .avi, .ogm, etc... on all of my video players, the sound is really soft and gets louder and softer in waves so it hurts my ears to strain... I don't know what's causing this cos this had never happened before and I just noticed it yesterday.

This is on my Windows XP, btw.

EDIT: So I tried watching Hulu, and it my sound is still funky. I turn it all the way up and the volume sounds like it's barely passed 1. D:

[Chiri Kcrinh]

bump. =.=