I am curious to know what it means to convert midi to wav. Midi is a message which states, play this note, this loud, this long on this channel. If you set your synth up differently you get a different song. (e.g. if you replaced you Hi hat with a snare, your song would sound different and midi does stuff like that very easily). WAV is a PC sound file which is audio data. If you recorded a high hat and don't like it, you are basically out of luck (I am not taking about the ability to remove a drum from a loop or something and replace it which is a different matter and generally a lot of work). So, when you have a file which contains no sound, just instructions (midi) how can a program convert that to an audio file (unless it "plays" it through a sound font or something and that and records it, which is not "converting it")?