Are you sure Ardour "needs" libaubio5? Ardour 5.8 and for that matter latest git builds just fine on ubuntu 16.04. From ./waf configure
Checking for 'aubio' >= 0.3.2 : yes
Checking for 'aubio' >= 0.4.0 : yes
Doesn't even check for 5. Maybe the dependency for libaubio5 in Ardour needs to be relaxed and it can be migrated to newer libs when everything else is.
Are you sure Ardour "needs" libaubio5? Ardour 5.8 and for that matter latest git builds just fine on ubuntu 16.04. From ./waf configure
Checking for 'aubio' >= 0.3.2 : yes
Checking for 'aubio' >= 0.4.0 : yes
Doesn't even check for 5. Maybe the dependency for libaubio5 in Ardour needs to be relaxed and it can be migrated to newer libs when everything else is.