Michael I be confused.
Midi records via a program like Cakewalk (pick your own version(s)) and is a 
data file .MID .  Now to record "sound" ie; with a microphone of from a sound 
media like record, radio etc. that would be a .wav file format sorta like a 
digital file or sounds same as a music cd.
I play on my keyboard and record the track in CakeWalk (5 versions on my 
system)  then record a 2nd track and play both back so you can have drums 
and sax together etc.etc. .WAV is recordes all at one time as it is a wave 
format.  I hope that this will help???
Clint
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