I'm also getting no sound. I'm using the Windows version, on Windows 10. I can hear sound fine on the "Play Online Free" html5 version, although I can't get the local html5 version to work, it just gives me a blank screen.
Here's the internal log, if it helps any: https://pastebin.com/StrT1S0s
This line might be relevant, not sure:
"ERROR: 'frankenstein_ifeelmyheart' in set 'passage' failed to play. Check name/did you buffer it?"