There was a bug with the up-to-date logs pages causing some script errors now solved:
Up-to-date logs with audio files:
https://www.achimbrueckner.de/freeradio/php/wordpress/?page_id=40258
Up-to-date logs text only:
https://www.achimbrueckner.de/freeradio/php/wordpress/?page_id=39057
Both pages are refreshing every 3 minutes. So a good chance to follow my loggings if I am online. Audio files are uploaded with small delay.