mAirList inserts silence in playlists

I don’t use a Hard fixed time marker. The TOTH is inserted when the playlist is loaded by mAirList.

If I schedule all the hours with more than 60 minutes of music, e.g. with 30 seconds more each hour, than I will end up with 300 seconds too much after 10 hours and possibly, mAirList will then skip a song. I don’t want that to happen. Everything worked OK in Version 5.1 but something to the TOTH behaviour changed in version 5.2. I have no idea what. Where can I find more information in the manual or wiki about this TOTH behaviour and hard/soft fixed times?

Thanks