how would you turn a .wav file into a midi file???
Simple answer: you don't. Lots of discussion on this can found by using http://www.noteworthysoftware.com/ as a launch point and following the links provided therein.
What about the other way around?
Once more, with feeling: this is one of the hottest topics ever to hit the NWC forum. Check out https://forum.noteworthycomposer.com/?topic=850 and https://forum.noteworthycomposer.com/?topic=1036, for example.
There is something of a brief tutorial on these and related subjects at http://www.hitsquad.com/smm/tutorials.html
Perhaps might be helpful
Easiest and best midi2wav I have found is the Roland Virtual Sound Canvas (VSC-883H). You can pick it up at http://www.edirol.com/ for $69. Superb sound, incredibly simple. Just load your MIDI file in the VSC player and click the Audio Convert button.
oops! that should be VSC-88H3
If your music is monophonic, then you can definitely can convert WAV into MIDI.
The best software I have found is called "Digital Ear". Digital Ear's website is:
http://www.digital-ear.com/
Results are truly amazing see:
http://www.digital-ear.com/midi.htm
Take care,
Jeff
eww. if its monophonic then its not really music, is it