If I remember far back enough I think my friend used one of those cassettes with a small jack coming out for that. I can't remember what they are called, but they used to be used to hook your discman up to the car cassette player. Lol those things were so cool before cdplayers for your car came haha, you should just be able to plug it into the lineout of your soundcard and it should work, but the quality runnig through your tape deck wouldn't be that great. I'm sure there is a WAY better method to do this, but this is just something I remember. Sorry.