Why does the COMODO firewall hate itunes? I mean it refuses to allow me to download podcasts. Itunes is indeed marked as a permitted application and the firewall is not refusing any other defined application access. Sure it keeps asking about firefox day after day and repeatedly but it is asking not just causing a problem.
You mention that CFP keeps asking for FF as well as not letting you download podcasts. The thought occured to me that you might have your security level too high. I only get a FF pop up when it changes, as it just did when it updated to version 22.214.171.124. I use iTunes but don't do podcasts, and everything works OK.