Vocaroo: Record your voice and it instantly saves online and provides an embed code. Be aware that Vocaroo recordings expire after a few months. The widget requires Flash, so mobile users cannot see or play the widget. Does not work with New Google Sites.
SoundCloud: Upload or record audio at soundcloud.com. There is not time limit on a single recording, however, a free account is limited to a total of 3 hours of audio. You can upload an image and customize the size of the widget before copying the embed code.
Blabberize: Upload a photo, add a mouth, record, and publish online. Blabberize requires Flash to create and for playback.