No problem! Happy to help! We're very interested in figuring out this issue. Thanks for both attaching a screenshot of the settings and testing with the StarlitKoreography demo. We've noticed some really strange numbers show up there that are inconsistent with what we're seeing on our end. I've attached a screenshot that shows what we're seeing. Two differences stand out immediately: The Sample Range - End field is off by one (1 less in your screenshot). The Window Size field is off by one (1 less in your screenshot). This is pretty disconcerting. The only differences are platform (we develop primarily on macOS) and build target (Standalone vs. UWP). What's more, #1 above is simply a reflection of the sample number reported by AudioClip.samples (which may actually be a very minimal [and different] display bug...). Could you perhaps try changing the Build Target to Standalone Windows and see if the feature works as expected?