the waveshaper node is implemented incorrectly on Mac Safari (https://bugs.webkit.org/show_bug.cgi?id=129333) and causes extreme distortion of the sound

This reverts commit 45cb96f2.

Depends on the VM change that sets the mime-type

Also noticed that Delete aria label was not localized.

Use the classNames feature to include/exclude a class based on a boolean instead of ternary operator

* split play-button into container and component
* revised sound library tile:
  * play button in upper right
  * smaller sound icon (make the tile less loaded)

Play button doesn’t have a ‘touch-outside’ listener to stop sounds. That seems to be ok as other events cause the sound to stop.

Both handleClick and handleMouseDown are needed. Must use handleMouseDown for `preventDefault` to skip setting focus on the item. handleClick is needed to prevent the Click from propagating to the item and selecting it.

Update UI play/stop button when the sound ends