I have an hp. there are 3 jacks on the front: a light blue, a pink, and a light green one. the light blue one has a dot surrounded by lines with an arrow pointing at the dot. The pink one shows a little upright oval resting on what seems like a swinging stand. the last I already know is for earphones. I know this may sound really dumb, but I'm not sure which one to plug it into to record sound. I've done it before but now it seems to not be working and I'm wondering if I'm just plugging it into the wrong spot.Thanks.