Thanks for the reply.
My first thought was player problems; however, Escape Pod is the only one of my dozen of so podcast subscriptions with this problem (so far) and that problem started only recently -- within the last month or so. The first nine months or more were fine.
Again, I can use some of the files. Right now it's about one in four. I don't see any glaring differences between the two sets. Assuming all files are tagged the same, they should all look the same to the player, right?
I don't know squat. I just download, use what I can, and delete the rest. I just thought it would be nice to have more Escape Pod in the mix.