I accidentaly deleted a song file (recycle bin included) can I recover it?

The reason why I'm asking in an itunes forum is because I still have the notice that the file is missing in my itunes library and wanted to know if it was possible to somehow recover it from the information available in itunes. It was from a PC file, so I can't just re-download it and it's something that isn't in any store (that I can find at least) which is why I desperately want it back.