MusicPlayableBehaviour only plays music in Editor mode, not at runtime

[IcePower]

Description

I'm using the MusicPlayableBehaviour class from the JSAM audio system in my Unity project. I've noticed that music playback only works in the Unity Editor when previewing Timeline clips, but doesn't play at runtime.

My Questions

1. Is this intentional design? If yes:

• What's the architectural reason for separating editor/runtime playback?
• How should we trigger music at runtime when using Timeline?

2. If unintended: Is there a missing implementation for runtime playback in ProcessFrame or other methods?

Environment

Unity 6.0.47f1 JSAM Latest (from GitHub)