Send a mp3 message through twitter.

Twittergram API also available here

Have you ever felt limited by the 140 character limit of twitter? Well Dave Winer has the answer for you. His idea is that you can create what he calls a Twittergram. Basically you can just create content, post the content somewhere else and then link to it in Twitter. That is a VERY high level view of it, go read his post to find out more...