The Mercury News has a piece about the Audioblog service which, while not new, is perhaps not widely known:
Enter Audioblog.com, a Web-based service run by Eric Rice, an East Bay digital media producer. Audioblog.com simplifies the task of posting audio and video files to Web sites. "We said blogging is now a platform, people are constantly publishing, so let's now do the audio thing," said Rice, who already was doing an online radio talk show when he founded the company.
The Audioblog service costs $4.95 a month. To get audio onto their Web sites, bloggers can upload an MP3 or WAV format file to the Audioblog servers, or call into the service from any phone.