Recording audio files...

To record a WAV file to tape you need a soundcard, a tape recorder and a WAV player. The latter is easy to find (under Windows the MS Media Player itself is enough - anyway I would suggest to find one under MS-DOS and work under plain DOS). About the soundcard and the recorder, we should keep in mind that:

• disabling the audio options not needed will produce better signals on your soundcard output. This means, before recording, disable:
  
  Line In, CD Audio, MIDI
  
  and check if the soundcard output is still present. Thanks to Fabrizio Gennari for pointing this out;
  
• a mono channel recorder would be better;
  
• set the player volume on your PC at a medium level, then set the output volume of your recorder to zero (to avoid hearing the Wav file while recording it) and a low recording volume (half volume should fit);
  
• if your recorder has a VU Meter, you can adjust these starting settings to optimal ones during recording. Just be sure that when data is sent (keep watching for 20-30 seconds about) your VU Meter indicates at least -3db when there's signal and doesn't exceed +3db about. In case you don't read such a range, adjust your player volume and when ok, restart recording from the beginning.