Itunes feed not playing

I’m not sure. The last 4 episodes have a <itunes:duration> value greater than 1 second. The older episodes have the value 0:00:01.

One thing which could be the source of the problem is that the file names of the media files contain white spaces. That is okay on a personal computer. But internet servers or scripts on servers could have problems with these file name.
I recommend that you use underscore or hyphen characters instead of the white spaces.

Another reason why a player does not play media files is some times because of the format/type of the files. Maybe you could re-encode the file with a different audio software. But this situation is more unlikely. That is why you should try the other idea first.

Thank you for your quick reply! The feed mysteriously began playing again without me changing the filenames or calculating the duration of the podcasts, so all seems to be well for now.