Would anyone have problems if I switched the podcasts to AAC (.m4a) instead of MP3? AAC will make for smaller files, better performance and the ability to add visuals in enhanced podcasts. MP3 is of course more compatible, but is getting a little long in the tooth. For those who use iPods or stream the show from the site, you'd be fine. It is for those people with older computers or MP3 players that don't support AAC.
Please leave a comment and tell me if it will be a problem for you.