Comment by Kim

An example could be: http://media.libsyn.com/media/skepticsguide/skepticast2015-11-07.mp3 Unfortunately I have been unable to re-create the problem, even though every one of the then missing files (and only the missing files) all had a year tag in the form of -00-00, and correcting it did make the files visible. Well I have rebooted in the mean time, so ... As I cannot re-create the problem, I have changed the question to [Not relevant]