Heartland

I need a spot of help.

When I record a track of audio in, any other tracks that already exist will mix themselves onto the track I'm recording. It happens when I'm playing something in using the Line In ports.

It's a set up problem with my soundcard I think (Soundblaster Audigy 2 Platinum Pro) as opposed to the programs I'm using (has happened both with Acid 5 and Cubase SX). I haven't played with the settings as far as I know, I just installed the drivers the way I did originally when I first started using the card (and I didn't get this problem then).

Any ideas?

And I've solved it. Goldwave was set to record "What U Hear". Even though I wasn't using it, it seemed to affect some setting somewhere.