Yes, thank you, I know how to make specific ending tracks. But according to P.G. himself, if I have recorded an ending along with the track, then that should be enough. And all my recorded audio included a 2-bar ending along with the music that was playing.
And also, it still doesn't explain why they work on my Muted Trumpet set but not on the Vibes.

I'm on a Mac, so I have a nagging suspicion that this is yet one more thing that works worse on Mac than PC. It would be very helpful if the PC users who have grabbed my sets would at least say if these endings work for them or not. So far I'm seeing a lot of downloads and not so much as a thank you for my work!

There's only one thing to do in crisis like this - Sleep on it!
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BBox 2022 Audiophile, Mac Pro Intel, OSX 10.6.8, 800x600 (TV VGA)