New library for PWM playback from SD cards: SimpleSDAudio

Hi,
Sorry, that patch did not work.
Result : Audio file not played.Instead, there were lot of glitches-only glitches.I have noticed that the glitches came out as a stream (loudest at the start and diminished along the time line and died in few seconds).But that was from "Bare minimum" sketch.
When I tried the " Bare minimum with Debug", it gave a continuous tone of 125 hz approx.(No audio file content played).
But, sketch examples with worker (bare minimum with worker,bare minimum with worker with debug),worked normally,of course with the glitch.
Could you please explain what exactly the patch modifies.
Anyway, thank you for trying to help me.

manmachine.