static ImageSurface showAudioFileWithEditableMarkers(final File audioFile) {
  L<Float> markers = audioFileFloatMarkers(audioFile);
  final ImageSurfaceWithXMarkers is = ImageSurfaceWithXMarkers(audioFileToFrequencyImage(audioFile).getBufferedImage(), markers);
  is.onMarkersChanged = r { setOneLineFileInfoField(audioFile, markers := struct(is.markers)) };
  is.setZoom(2);
  showPackedFrame(fileName(audioFile), withCenteredButtons(is,
    "Play full", rThread { playWAV(audioFile) },
    "Play clipped", rThread { playWAV(clipWAVFromMarkers(audioFile, is.markers, javaxCachesDir("Audio/clip.wav"))) }));
  ret is;
}