PodOmatic is an excellent site for creating podcasts that I found out about from the award nominated blog (and wonderful educator, Shelly Terrell), Teacher Reboot Camp. This site is very user friendly and makes it easy to create a podcast and then add audio via iTunes. Once a podcast is created it can then be embedded into a site.
There is definitely a "web 2.0" component here as finished podcasts can then be promoted and shared w/ others online.
Give PodOmatic a try by clicking here!!