I was trying to watch a few of the older podcasts 21, & 23 but was unable to, as I no longer have Quicktime 7 on my PC.
Very recently Apple announced it was not supporting Quicktime 7 (windows 7), version. Because of the lack of support it was recommended that Quicktime 7 be removed from PC's since WMP supported almost all apple formats.
Well it appears that your Podcasts 60 and below do not play in windows but require Quicktime, podcasts 61 and up play OK in a vimeo window.
Is there any solution other than reinstalling an unsupported QT7.