I open a PTE project made with v7 with audio comment added to one slide, the audio comment is missing in PTE9. I add audio comment to a single slide again (of the same "imported show"). Slide options -> Add audio file. When I play slideshow in Mini player - sound is played, when corresponding slide is showed. When I Preview the slideshow (F5 or Ctrl R), the audio comment is not played. Also Audio comment is not playing if I make exe file.
If I add the same mp3 file through Project options as project audio, sound is played as expected.
PTE 9.0.10 (also 9.0.9 has that bug). Windows 10 64-bit (all recent updates including Creators update).