You could probably 1) remove your ~/.cache/mediascanner directory, 2) store the music files from tests/autopilot/music_app/content/ and ONLY those files in /home/autopilot-music-app/Music/ and rerun mediascanner with that directory as input. Feel free to inspect the non-free blobs to ensure the data locations are correct, etc.
You should note that this version of the mediascanner will not be used by the app for very much longer (hopefully under 1-2 months)--so your efforts might be for naught.
You could probably 1) remove your ~/.cache/ mediascanner directory, 2) store the music files from tests/autopilot /music_ app/content/ and ONLY those files in /home/autopilot -music- app/Music/ and rerun mediascanner with that directory as input. Feel free to inspect the non-free blobs to ensure the data locations are correct, etc.
You should note that this version of the mediascanner will not be used by the app for very much longer (hopefully under 1-2 months)--so your efforts might be for naught.