As I've mentioned above you can use a simple sound card based on PCI or ISA interface. So, for example, an old ISA sound card at a starting price of about 5 $US can do this job as good as a modern sound card.
I'm using a modern 5.1 sound card but I let it work as a simple stereo system. So, my sound card is absolutely overpriced but it was already on board. I have a HiFi stereo amplifcation system (since about 25 years). So, I can't connect a 5.1 sound system to my HiFi system...

You'll be surprised how good it'll sound to you if you'll have done your first recordings on it. It is 44.1 KHz at 16 bit - that's the actual HiFi standard like you wont it by your regular CDs...

[This message has been edited by Sheriff (edited 05-11-2005).]