S3Bubble offers secure, Media Streaming from Amazon S3 to WordPress with built in analytics and aws uploader.
WP WebinarSystem allows you to run webinars within your WordPress website, and customize everything around it.
Plug-in to integrate SAM Broadcaster with your WordPress site
The BlinkoTV Broadcaster Plugin gives any WordPress user the opportunity to create their own broadcasting station, by signing up for a BlinkoTV accoun
Croice helps bloggers to create and share interactive audio streams or webinars that attract and engage audiences.