[ssahl]

If your using goldwave you need to click on tools then click on 'device controls'
then click on the device control properties button. make sure that the record device is your sound card then click on the volume tab, you'll see line in, microphone, aux, etc... choose line in and adjust the volume
if you can hear it then you just need to make sure your program that your using to record is recording from the line in of your sound card.

I never said anything about using a microphone jack, especially one that came from a turntable, most new motherboards however will adjust the mic, line in, and speaker jacks acording to what you plug into them, not that I would test that.

Yes if you have a Receiver with line out rca jacks that would be the best, but it will still work without a receiver, as was said though the volume will be low, that can be adjusted some when you record the sound file, as for the quality who knows, it may very well sound like crap, I've done this MANY times with a tape deck, not once did I ever ruin my sound card, and it worked everytime, however when I didnt run from the line out of a receiver the quality was sometimes really crappy, but not always