• made queues a globally monitored list
• all collected states from DB are life cycle aware, saving some energy
• on PlayerUI, added time spent with the position
• Android MediaMetadataRetriever routine is replaced with the more capable FFmpegMediaMetadataRetriever
• amended TTS
  • upon clicked (or from long-press menu), prompts selecting text source (description or transcript)
  • transcript involves downloading from the net, which may or may not be available
  • button turns to Cancel while generating audio file from the text (may take several minutes, run in background)
  • allows cancel processing
  • when audio file is generated, Play button is shown
• got a new StreamOnce icon
• some cleanup in Queues screen
• some code refactoring and improvements