Description of App:
Speed-Up is an ITunes plugin that provides variable-speed playback and for audio files, customizable hotkeys for speed and fast-forward/rewind, and presets. Speed-Up does not support Airplay or DRM content such as Audible books or Apple Music.
Free or Paid:
Version Of macOS App Was Tested On:
Very minimalistic and perfectly accessible, including painless hotkey assignment. Run ITunes, then run the app to display its playback controls. If using the touchbar or hotkeys you've assigned in its Preferences panel, you can switch back to the ITunes window. Speed is adjustable in 0.25x increments, and preferences additionally include the amount of time to seek forward and back, along with whether or not to adjust pitch.
Ideal for podcasts. The IOS Podcasts app includes a speed control on the Now Playing screen, although its hard to locate (explore by touch to the left of the playback controls). The app is restricted to 5 different speeds, though, and 1.25x is not among them.