MidiSyn is a very easy to use Windows program that lets you convert your MIDI files to WAVE. You can listen to the generated WAVE files directly or you can convert them to MP3 files or even burn them into audio CDs so that you can listen to them on your Hi-Fi or car-stereo.
This is a software only process that uses your PC standard resources. You do not need any dedicated hardware to successfully use MidiSyn. It uses standard SoundFonts as the basis for its rendering engine.