This looks to be a good place to start podcasting.
Podcasting is a means to publish audio and video content to the world via the Internet. Audiences are able to subscribe to their favorite shows and automatically receive the latest episodes in iTunes or similar client. Creating a podcast of your own is almost as easy as listening to one. Grab a mic, record an MP3, get on your soapbox, and let them take it from there!

http://www.libsyn.com/

Vimeo helps to make videos easy. It has groups, channels, widgets and more to help provide you with tools to get the most out of video blogging. You can upload any kind of video you make. They even support high definition. With the click of a button you can share the video with anyone you want. You can even post videos on other sites like Facebook, MySpace, Flickr, or Digg.

What you get when you join Vimeo
500MB per week
Donwload original file
Create Groups and Channels
HD uploading
Easy embed features
Robust privacy controls
and as they state on thier website, huge street cred!

Lip Dub Pop Muzik from fredasterical on Vimeo.