tweetcast - the practice of live tweeting
(also known as twittercast).
tweet, sending messages on twitter
cast, to broadcast; as in netcasting, webcasting, etc.
for live music, tweetcasting means uploading files (typically mp3 files) after each song is over and then tweeting their URLs via twitter. it's easy, and it brings music to where people are. if you have a band, try it!