sound doesn't start when the playback speed is different than 1
Android 4.1, samsung galaxy chat b5330 using 1.5.0 65876e1 As in the topic, to reproduce just enable time-stretching audio, and open a video.
Increase the speed, and exit by pressing back twice.
Try to open again the video, it will start with the saved speed, but with no audio.
In order to have the audio you can set it back to 1.00 speed, back twice and open it again