TuneFUSION application
  • In main window: choose relevant sync
  • Click 'edit' button
  • In General & Music Library panel, click 'options', 'Show Last Detailed Log'

foobar2000 mobile
  • Open Tools menu
  • Console in Utilities section
  • "Save" button in the upper right corner menu will cause the current content and anything from now on to be saved to your device's storage.
    Android: you will be prompted to choose the folder to save logs in.
    iOS: Logs can be retrieved using built-in FTP server or iTunes file sharing.