One of the Audacity use cases lists functions that would be useful when transcribing recordings.  I’ve investigated what is required to implement these features, and while it’s more complicated than I might have hoped, it doesn’t appear to be insurmountable.  Looping play repeats the initially selected section until stopped; however the selected region can be changed without affecting the looping region.  Similarly, it seems apparent that dynamic changes to the looping region should not change the current selection.  Therefore, none of the current “change selection” code can be re-used. (more…)