Multimedia

• I have a podcast which currently points to an XML feed on my old server, which we no longer update. So how do I force iTunes to point to my new podcast on my Gutensite?
• I would like to promote the audio/video files on my site by publishing a Podcast. How do I start?
• Can I still use the FLV format?
• What multimedia formats are supported?
• What format should my audio be?