The MacOS v2.0 build currently doesn't include the music.
With this ticket:

• Validate music licensing rights for MacOS (hey @peyre, are there any licensing issues here?)
• Build and play-test the game in MacOS with music
• Create release v2.0.1; attach new MacOS binary and the v2.0 binaries from the other OSes.
• Remove note at the top of the 2.0 release page