This is an easy one, it's simple, just line out from your soundcard to line in on your cassette deck, hit record on your deck and play on your recorder program. Just be sure to check the playback settings on your pc, (it wont work if you have the line out muted and you might want to adjust the output volume so that you get the best sound.) I do this on a regular basis ( we only have a tape player in our car) If the tape isn't quite to your liking you may need to run through an EQ before going into the tape deck, sometimes digi needs a little tweeking when being transfered to analog ( this is true going the other way too) You might have to experiment with your gear a little to get a deacent sounding tape but its not all that hard to do.