The soundcard has certainly a nice "stereo" centre with it, a software. With that you can listen and record your LPs via the external port on the soundcard. Store them as *.wav (huge harddrive required) or as *.mp3 files (about 12% of wav files).
With a standard CD burner you can than burn an audio CD which will run on the home stereo, or store the files as you like.
About 150 mp3 files (pending on the size of course) or 15-20 wav files fit on one CD.
You will enjoy the scratchy LP noise coming in hifi 3D enhanced through your 2000W ghettoblaster....