If i understand you correctly, you want to import a piece of wave-data, and have that complex sound-wave-pattern split into destinct midi tracks of percussion, lead, pads.. oso? that would indeed be awesome, and a world first sensation -on top of the awesome -It is absolutely impossible. :p
You can find proggies that claims to be able to perform mp32midi, but listen to the output- It sounds terrible. A wave-pattern is simply to complex, to be 'splitable' -You can turn pure sine wave sounds (beeps) into clean midi-data, and that works quite well, but thats the limit. Complex wave-data will be absurdly difficult to process, so the closer a input file represent pure destinct beep sounds, the better the conversion.
-btw - be careful with those dodgy mp32midi. It is often scamware, and has vira and malware embedded!