You could give modplug tracker a go, It a very good piece of software for converting from one sound format to another and is also a tracker just like Protracker or Octamed.
Load your sound file (mod,s3m etc) via the file menu. Once loaded, Go back to the file menu and selcet "Export as midi".
The quality of the output varies a great deal, So your mileage may vary.
http://pweb.jps.net/~olivierl/Trooper
