Tape Deck + Sound Card

Hello, so I have the following problem.

I have a tape deck which I have connected to my sound card (REaltek AC'97 Audio, is the info I could gather) and of course when I play a tape I'd like to hear it though my sound card. Problem is, it is not working.

My info: A double boot Fedora 12/WinXP SP3 machine. Please do note that when I boot into WinXP I do not have this problem, I can hear the music fine. Further, previously and with exactly the same hardware but with FC 6 it worked! In other words by upgrading from FC 6 to Fedora 12 I lost the ability to use my sound card this way (in Linux). Does anyone know a way to fix this? Thanks!

have you checked your mixer levels? if you're running kde, you should be able to access it via kmix, or maybe even alsamixer depending on how your sound is set up. Check your input levels, and see if that helps.