What you are asking for is not very practical, but it is possible....to a point.

You can do a Google search for "audio to MIDI" to find programs to do that.

I've tried Intelliscore with some success.  I imagine it would work best on simple audio files with a single instrument and melody line.

You can download a free trial version here as well....

http://www.intelliscore.net/index.html?src=gaudiomidi&gclid=CNSa7rbM6KECFRAeDQodAlT4Vg