iTunes: old podcasts in error

I am trying to download all the Podcasts from iTunes. The list downloaded by iTunes contains 62 podcasts. I am able to download most of them, but some come back with errors:
- brainstorming 1/2
- how to resign 2/3
- preparing for your review 2/2
- managing during mergers and acquisitions 2/2
- time to party?
- answering questions in a presentation 1/2
- how to make a job offer 2/2
- how to run your staff meeting 1/2
- how to handle body odor
- managing through a personal crisis
- how to take notes

Some of these I had already downloaded (and deleted).

I know I can manually download each file and then import each file into iTunes, but I wanted to check if there isn't any easier solution.

Help anyone? :-)