I need to open a MUS file, but nothing I found on the internet has helped me open it. Is there a way to open it for free?
http://www.finalemusic.com/products/finale-notepad/
Download Finale Notepad. The MUS file extension is the Finale Notation file. It's free and you can open these MUS files.
(I think this was covered in the "Help" section of the main site... ? ... *checks* Yes it was.)