Changing the format Type in Adobe reader

Now I have this audition piece for band and I want to here what it sounds like on Finale Reader ( music software), it requires the file to be in .mus format, how do I change the scanned music piece into .mus format ?

What is the original format?

If you mean from .pdf to .mus

http://www.myriad-online.com/en/products/pdftomusic.htm

Does this work?

Thank you, but i just manually did it took for ever though
that site only does that if the original format was made from finale. In my case, it was scanned so I did not work.