7 digital scope doesn't play audio demos from store

[Dave Morley]

STEPS:
1. (Currently) install unity-scope-mediascanner2
2. Select the up arrow in the scope window
3. Star the Music scope
4. Add some music to the system both ogg and mp3
5. Play the ogg local music
6. Play the mp3 local music
7. Goto the 7d store and select an album and press play to demo one of the tracks

EXPECTED:
I expect all of the audio to just work

ACTUAL:
The ogg plays however the mp3's don't, under unity7 this will trigger a search for codecs but not in unity8.

WORKAROUND:
sudo apt install media-hub gstreamer1.0-fluendo-mp3 then run CORE_UBUNTU_MEDIA_SERVICE_VIDEO_SINK_NAME=mirsink CORE_UBUNTU_MEDIA_SERVICE_AUDIO_SINK_NAME=pulsesink /usr/bin/media-hub-server &

You should now be able to play audio without stuttering or playback issues both locally and online.

[Michał Sawicz (saviq)]

Media-hub shouldn't be required for stutter-less playback, we can't preinstall the codec anyway.

We need to find out what triggers (or doesn't, in our case) the codec check and hook it up to a trusted prompt.