Avidemux doesn't play audio in some MP4 videos

[DavidMoss]

Hi everyone!
Avidemux doesn't play audio in some MP4 videos. It shows a message "Trouble initializing audio device", and video is playing without sound.
Here is the sample: https://yadi.sk/i/vlu7WQQM33jUnw
Tested: Avidemux 2.6.15 (appimage version from here http://www.fosshub.com/Avidemux.html/avidemux_2.6.15.appImage), Lubuntu 16.04.1 LTS x64.

[Jan Gruuthuse]

This should play (MP2 stereo track), it does here.
What are your audio options in Avidemux: Edit: Preferences: under [Audio]?
Select another AudioDevice like PulseAudio or one of the Alsa. You don't have other program running that claims audio device exclusively? Some programs do like mixxx.

[DavidMoss]

Sorry for disturbing, I've found there was no Pulseaudio in Lubuntu. I've installed it and the sound has appeared.