For any podcast, There are at least two files necessary:
An Audio File (MP3) – The audio file is the recording you export to disk using RecordForAll. Podcasts can include on or more audio files, each associated with an item in your podcast.
An RSS feed file(XML) – The RSS feed file needs to be setup as a podcast feed, with one or more audio files associated with one or more of its items. You must use an RSS feed creation program, like FeedForAll to create the RSS feed podcast file. When you publish your feed using FeedForAll, both the audio file and the RSS feed file will be uploaded to your webserver.