48         std::shared_ptr<ARDOUR::Region> 
_r[16];
 
   50         std::shared_ptr<ARDOUR::AudioRegion> 
_ar[16];
 
std::shared_ptr< ARDOUR::AudioRegion > _ar[16]
std::shared_ptr< ARDOUR::Playlist > _playlist
std::shared_ptr< ARDOUR::Source > _source
std::shared_ptr< ARDOUR::Region > _r[16]
std::shared_ptr< ARDOUR::AudioPlaylist > _audio_playlist